Help, I am having a problem getting above 45 mph top speed. I have just put 23-58 weights in the clutch with a black spring and new belt trying to fix this but it did not work. I am hitting 6200 rpm. This is in a 2014 razor 800 trail with engine braking in it. Before I did this I had 62 weights and a green spring ,all I gained was a small rpm raise, about 200 rpm on the top end.maybe a little stronger low end.