I have no idea how the divider plate will work out once I have some jets that will carburet cleanly with it. I can definitely say that it provides a good increase in vacuum signal strength from idle most of the way up the needle because the jetting was WAY rich once I dropped it in. The RM still has some raspy, somewhat loaded up feeling jetting below 1/8 throttle ( without the divider plate) that I haven't been able to clear up with pilots or air screw adjustment. Hoping to avoid cutting the slide because they are expensive. I'm optimistic that the stronger signal provided via the divider plate will clean up the jetting here and let the engine pull cleanly/with more torque off the bottom.
The flywheel weight definitely helps, the 10 ounce I tried first just wasn't very impressive. We ride on lots of gravel, hard pack clay power and gas lines, and other slick stuff. The 19 ounce ( version two) definitely made a noticeable improvement in controlling wheelspin. If I can get the porting , exhaust and carb setup dialed I might go back to the 10 ounce one later or somewhere in between. There is very little clearance under the flywheel cover on the RM. The 10 ounce was about 5/16" thich and I had to machine a spacer using a tracing from the gasket. The heavier weight is 5/8" thick and just barely clears with the 3/8" thick spacer.
Thanks for the tip on the KDX cd, I'll look into it. Later, Michael.