Preciso me Encontrar - Cartola (1976)

This is my first tab :) I heard this song in the "City of God" movie, and
immediatly wanted to learn it. The only tab i found was very bad, so I
decided to make my own for future guitarists who want to learn it. 
Some parts may be incorrect; if you have an improvement, 
please e-mail me at tobo_95@hotmail.com

Thanks :) ~ Thor

Tuning: Standard (EADGBe)
Duration: About 50 seconds, start to finish.

e|---------1---------1-----------0-----------------1----0-------|
B|-------3---------3-----------3---3-------------2---2----2-----|
G|-----2---------2-----------0-------0---------2---2----2-------|
D|---0---------------------2-----------2-----2------------------|
A|-------------3---------1-----------------0--------------------|
E|--------------------------------------------------------------|

         (Bassoon starts playing in the background) 
e|-------1---1-----------1-----------------0----------------------------|
B|-------3-------------3---3-------------3---3----------------3---------|
G|-----2---2---2-----2-----------------0-------0------------3---3-------|
D|---0-------------------------------2-----------2--------0-------0-----|
A|-----------------3-----------3-2-1------------------------------------|
E|-----------------------------------------------------3----------------|

e|--------------------------------------------------------------------|
B|-----------------3--------3~--3-----------2----------------2--------|
G|---------------4---4-----4--------------0----0--------0-------------|
D|-------------3-------3--3----3--------2-------------2---2-----------|
A|------------------------------------0-------------------------------|
E|---0-1-2-3-4--------------------------------------3-----------------|

e|-------1--------1-----------------------------|
B|-------3--------3--------3----2----2----2-----|
G|-----2---2----2---2------1----0----0----0-----|
D|---0------------------------------------------|
A|------------3----------2----1----0----4-------|
E|----------------------------------------------|

e|-----------1-----------------1---------------------0---------|
B|-------3---3---3---------3---3---3-------------3-----3-------|
G|-----2---2---2---2-----2---2---2---2-------0-----0-----0-----|
D|---0-------------------------------------2---2---------------|
A|---------------------3-----------------1---------------------|
E|-------------------------------------------------------------|

   \/    This part    \/  may be VERY incorrect, post suggestions please!
e|-------------------------------------------------------------|
B|----------------------------3----------------2--------2------|
G|-------------0----------4-------4----------0--------0--------|
D|-----0-----0-----0----3---3---3---3------2--------2----------|
A|---------------------------------------0--------4------------|
E|---1-----3-----3----4----------------------------------------|

e|-----------1------------------|
B|-------3-------3--------------|
G|-----2---2---2---2------------|
D|---0---------------0----------|
A|------------------------------|
E|------------------------------|

e|------------------------2----------------2-------------------|
B|--------------------1-----1-----------1-----------3----------|
G|------------------2---2-----2-------2-----------2------------|
D|----------------1-------------1---0-----------4--------------|
A|---0-1-2-3-4-5------------------------------3----------------|
E|-------------------------------------------------------------|

e|---------------------------3-----------------------|
B|-----3----3----3----3----3---------3----3----------|
G|-----3----3----3----3----3---3-----3----3----------|
D|---------------------------------------------------|
A|---1----0------------------------------------------|
E|-------------3----2----1---------3----1------------|
                                     (F#)
e|-----------0------------0--------------1~~---------|
B|-------------1------------1-----------1------------|
G|-------3-------3------3-----3--------2-------------|
D|-----2---2----------2---------2-----3--------------|
A|-----------------------------------3---------------|
E|---0--------------0---------------1----------------|

And that's it. 

If you can come up with a better tab for this part...
e|-----------------------|
B|-----------------------|  (about 30 seconds in to the song)
G|-------------0---------|
D|-----0-----0-----0-----|  ... then please email me at tobo_95@hotmail.com
A|-----------------------|  and I will give you the credits for it :)
E|---1-----3-----3----4--|