Fugazi - Combination Lock Tabs

Got stuck figuring out the chord part and looked for any tabs that could help. Didn't 
find any that had that part so I figured it out as close as I could and added in the rest 
of the song as I heard it since it seems closer than the tabs I've seen.

This is my first tab but I think its pretty close

h: hammer on

1st part

e|------12-12-11-11h12-11-|------------11-11h12-11------|
B|-12-12------------------|-12-12-----------------------|
G|------------------------|-----------------------------|
D|------------------------|-----------------------------|
A|------------------------|-----------------------------|
E|------------------------|-----------------------------|
 |<---     x3         ----------------------------------|


2nd part

e|------------------------|----9999-9999-9999-9999------|
B|------------------------|----9999-9999-9999-9999------|
G|9-7-9-7-----------------|----7777-7777-7777-7777------|
D|-------9--9-9-7-9-7--7--|----7777-7777-7777-7777------|
A|-------------------9----|-----------------------------|
E|------------------------|-----------------------------|
 |<---     x7         ----------------------------------|


3rd part
e|-99999-66-6666-6-7---|----9999-9999-9999-9999------|
B|-99999-66-6666-6-7---|----9999-9999-9999-9999------|
G|-77777-44-4444-4-5---|----7777-7777-7777-7777------|
D|-77777-44-4444-4-5---|----7777-7777-7777-7777------|
A|---------------------|-----------------------------|
E|---------------------|-----------------------------|
 |<---    x3       ----------------------------------|

        Then it goes back to the second part
with the end played every fourth measure.
and after that it goes back to the intro
Listen to the track to hear how many times everything's
played and to get an idea of the little differences that
are tossed in there but this should be a good basic idea.