How do I assemble my Garage Door Chain back into the housing?

[rylandeschell]

Look I took apart my garage door unit to switch out the back bone of the main unit. It's a chain gliding garage and I pulled the unit off the glide where the chain is. No I'm having a problem getting the chain BACK into the unit. The twisting channels and such are fine, but I can't seem to get it in the right position to bolt the two parts back together. The rest of the re-assembly is cake, but this chain is kickin' my butt. Help me please!!!!

 

[Whoredon]

you dont put a garage door in a house stupid.