So I installed a jbs sheave with a purple spring and 15g weights and it ripped but couldn’t wheelie anymore, installed 18g’s weight and the wheelies are back. Yay. Also when I got the sheave I used belray marine grease since the yamaha stuff is pricey and was recommended by my local powersports shop…. bad idea, all the grease ended up on the sides of the sheave and none on the weights which started flat spotting, so when the 18g’s I went with the yamaha ultramatic.
