Hi Guys, some advise from those who may know. I plan to run my MC18R5 as a period 6, historic race bike, 1983 to 1990. And I'm trying to keep things simple by not running to many systems on the bike that will just complicate things. This is what I have done and plan to do and I'd like anyone who has done so or just has an opinion to comment as to whether it would be beneficial or stuff the whole thing.

blanked off, plugged the powerjets
blanked off the Air solenoid system and done away with the solenoids
turn down the flywheel
removed the RC valve servo and fixed the exhaust valves in the full open position
remove the material in the exhaust ports to match up with the pipes/chambers
cut ports to a 34 degrees blow down
run single ring pistons
cut out the cast in flow deflectors out of the intake tracks
shape up the the cylinder material at the boost ports
get rid of all the unused stuff from the electrical loom, including battery.

Most of it is what you'd call basic tuning, and I am kinda dumbing the engine down, but I think it should work like a normal 2stroke.