Ya, most of the questions can only be answered with disassembly.
Ride report, maybe in a week or two. Got the mx fender being fitted and a pipe guard being glassed at the moment. After those I'll tear apart the front end.
History: Bike was purchased in 93 by a 6'4" 340lb corrections officer named Lil' Bubba. 1800 miles later the bike was sold to a gentleman in Sac. He bought his 2 kids and himself a bike and gear just to turn around and sell them off a month later.
When asked about the bikes performance upgrades he stated the obvious ,"(beer swig) There is the FMF pipe, can, and something to do the forks but can't recall what exactly (another beer swig). Taken with a grain of salt. Test rode her up the street ran out of gas. He put about a quart of gas in (I thought that was odd). Broke him off 8 crisp ones and the bike was mine. When I filled the tank the first time I found a small leak from behind the rear bracket. Nothing my hot air welder couldn't handle.
One of my biggest reasons for buying this bike is that it belongs to my era. My first bike was bought in 81.
Need to go shopping with the lil' wifey
Do your 250 forks have rebound adjustment?
The front by racetechs calc is set for a 75lb rider. That doesn't sound right. I just did the calculator so something is amiss 
I figured with being SO far out of recommendations trying to set sag would be an excercise in futility.
