when i done mine, it skipped an exhaust tooth. it ran but,with a bit of retarded timing.sounded like a 320degree duration cam,and idled bad.
i got a mate to help me get it right. we removed the tensioner,got the slack between the cam gears,and "slipped" it in that way.
put the tensioner back in, and that took up most of the slack, and i must of then rotated the engine 16 times, recounting the teeth every time i got to tdc. now it was hard, but once the tensioner was in, it would of been very hard to jump another tooth doing it that way.
your's is different, but i don't know why. something could be binding somewhere, both tensioners could be bad, the only thing now to do is to get a second pair of eyes to look at it.