It didn't take us long to find MX Vacations trailer. We also got very lucky and parked our rent-a-car right across from John.
MX Vacations operation seems to be John, his son, nephew (?) and a big burly guy named "Tiny" who oversees the mechanic duties. His trailer is pretty spartan; it has a couch, tools and ample space to stash your stuff. This is where I ran into problem number 2 although I didn't realize it yet. There was an electrical issue with one of the 450s another guest had rented. Because his race was early, he got my 250 ( I hadn't arrived yet) so I got bumped "The Spare" 250.
So I was to ride the #20 until all the bike problems are sorted out. Who cares? "It has a carburetor and won't start easy if you stall it" Tiny mentions to me. Great. It doesn't start easy but it finally does.