Manual slide operation

[BamaRam]

I'm a new first time owner and have been trying to familiarize myself with the slide outs. Mine has the electric rack system with the drive gear on bottom. It disappears into the under belly and I'm trying to figure out how to manually operate.

I read the Lippert manual and see how it's done. It has no holes in the opposite siding so it looks like I need to cut a flap in the material sealing the bottom to get to the motor.

I found the drive shaft so I'm assuming the motor drives it. I don't want to hack it up trying to find it, but I think I want to cut a flap, do the manual op, then tape it up so I won't have to do find it at night in a rainstorm.

How far is the motor from the frame rail towards center?

Any help? Thanks!