Found Bad Part
Ok so I slept on it last night, and Mike from FR sent me over in the morning a few pics of an installed gearbox/motor from inside the cabin without the slide inserted. I must say it would be really nice to have worked on this without the slide installed! The service shops are pretty busy in my area, and the $150/hr shop rate would add up quickly pulling a slide out (they said 8-12 hours to take out an put back in)
Seeing what bolts/screws needed to be removed from those photos from Mike gave me hope I could get it out now perhaps just through the compartment outside where the motor was.
I'll post pictures and a more detailed description later so others can learn from what I experienced, but short story is I had to enlarge the floor opening a few inches from inside the compartment to be able to get tools up in there with some various saws/drills. I had a few more challenges, but I was able to remove the motor assembly, and then was able to remove the gearbox/ragbox that housed the right angle gears.
I had already ordered the ragbox part earlier that morning in hopes I would get it out - (you had to order the whole box for $125 - no available components for it) from Venture, and had it on an overnight delivery ($60). Nice folks - I spoke with Patty.
Once I got the case open to the ragbox there was a rolled spring pin that had shattered and decoupled the fitting from the shear pin on the motor to the gears input shaft to the gear set. If I could figure out the specs of the spring pin, I can replace it on this one and have as a backup on the road at this point, since I already ordered a new box. Pretty expensive backup, but at this point oh well! Everything else seemed good (Teeth, bearings, etc)
Hope this info can help someone in the future. Again, I'll post some pictures, etc if that would be of help to others.