scrid

Hey everyone.
I noticed some clunking noise from under the hood yesterday, and found it was coming from under the timing cover.
Today I pulled the upper cover off and found that the timing belt had pushed the thrust ring clean off the drivers side cam gear / pulley. The noise I heard was the belt slapping the cover, since the belt had walked out towards the front on the cam pulley. The belt took some edge damage from rubbing on the fan bracket, but still works well enought to run the engine so I reinstalled the thrust washer onto the pulley with the locking compound and restaked the pulley egde to prevent it from coming off again. Then I reassembled everything else but left top timing cover off. I plan to replace the belt now, even though this one only had about 10k on it since I replaced it last. I can run the engine with the cover off and it still wants to push up against the drivers thrust washer on the cam pulley. I carefully used a long 3/8" extention and forced the belt to the rear of the pulley with the engine runnning but it ends up walking right back foreward again. Maybe with the engine rotation direction it's normal for the belt to walk toward the front? Or maybe I had a slightly defective pulley? Meaning the thrust washer should not have come loose at all? Both pulleys seem to be running very straight.
Hell I don't know anyone else have any thoughts?
Thanks.
P.S. does anyone have a good used cam timing pulley they would be interested in selling?