Timing belt tracking off center

[lost track]

my problem,s with a 96 Geo Tracker 5spd, 4x4, 4door no A/C
Motor #G16T101544. I'v done the timing belt at around 80,000 mi.
twice in the last 8 years. third times a charm right ? this time at 60,000. (now i know) this time off with the head, new Felpro gaskets, lapped valves, welded cracked exhaust. All back together compression 188 +/- 3lbs.
Now the belt tracks about 1/3 off the front side of the pulleys. wont fall off just wants to stick out so the cover will rub.
I'v got it off again, what could I be missing this time around ?
one thing I forgot, it's got 269,000 miles on it, ran like a champ till the head gasket gave up !

[fixkick]

the head had guide pins, of missing the head cants and will never track a belt.
bad belt.
old belt used and put on , reversed.
bottom cog wheel, center of it and crank snout no longer fit right, due to never setting the 94ft/lbs spec torque there

oh boy tracker dont track, right... it's and omen.

most simple fail is the index tab /tang on back of idler, not indexed and is now canted.
http://www.fixkick.com/t-belt/drift.html

good luck to you