Just moments ago I placed my 4 foot level on the vinyl flooring and confirmed our floor has a minor slope down to the rear.
Most garage floors have a slope to aid in draining water. Did you account for this slope when you measured your rig?
I suppose if we had a slide out, the condition would be more severe.
You raise an interesting point, it appears the slide would add weight between the front and rear wheels. This might reduce the weight ratio of the rear overhang. Our 2008 2350 with slide had no sag.
Ah! Great point Barry! Yes our garage floor is sloped rearward towards the garage door. I forgot about that. My PC's floor might be level after-all. At next opportunity, I'll place the level on the garage floor and compare it to the PC floor.
Interesting point about the slide-out. It might be a counter-balance, leveling the rig.