Great post. One thing to consider when doing a valve adjustment on most ANY motor.lf you rev the snot out of the motor__set the valves LOOSE in spec. lf you NEVER reach redline,set them on the TIGHTER side of spec. This is basic engineering,however there are exeptions but in my opinion in reference to the XT225 this is a standard to abide by.Basic stuff here but l add this because in my early days as a hangaround at the local tuner shop l once imparted my speculation to the legendary gurus that tighter valve specs made "more sense". l learned much from the old guns.
Bike mods? TM33 pumper carb, Webcams stage 1 cam, FMF powercore