I switched the Windshield on the Yager to a Puig sport shield, and you can see over it. It seems to have brought the top speed back up.
We just put the engine back into the GT218 with the new Malossi straight gears, yellow contra spring, and I took it for a ride. I forgot that I had taken the plate off the back, and on my test ride I hit a red light hard, and when I hit the painted line, the front tire broke loose then caught when it hit pavement again. I looked over to my left and a Police Officer was right next to me waiting for the light to make a left turn. He just kept going.
I haven't really gotten to try the straight cut primary yet, but it is a bit louder than the Polini helical, and a bit taller as well. The yellow contra spring seems to steady out the acceleration, but I'm not sure if the variator that I put in to go for my first ride, a CVT FR4, is affecting the straight line acceleration. I want to do a little more running and make sure switching the crankcase on the right side didn't cause any issues with how the bike works overall before putting a lot of new parts on it.