Roll up door adjustment

[supratreo]

So i installed all 3 off my Janus 2500 14x14 doors. read ALL of the instructions and tripple checked my work but for some reason the gear in the supplied chain drive does not fully mesh with the driven gear on the door.
i checked the spacers and I'm using the correct ones but all 3 are off by the same amount, about half the gear.
any tips on this?
Appreciate any help. thanks