ORIGINAL: Rat1
I just looked at the site and it does not look like the mesh is adjustable in this gear box. It looks like the mount clamps around the can of the motor but I could be wrong.
Yup, the mount clamps around the can of the motor. You have infinite variability on where the can is within the mount. I set it up so that the front of the can is even with the front of the mount. The pinion gear also has some variability as to how far it slides on the shaft. I set it up as stated in my post above. Hope I did it right, in that there was no instructions that came with the gearbox.