77srx...
ya, the yamaha silver will hold the intial shift fine for ya, and it wont hold back the topend like that hauck one will. take out some weight in the first hole, you have 8bu-00 right? try a .8 gram alum in the first hole with a 4.5 in the tip. If you go to a shallow finish helix, you can add more tip weight and the sled will have more topend, from the shallow finish and increased tip weight. Did I tell you about using a 1/4"-28 tap and running bolts and nuts in the weights, cause sometimes youll need more then the 4.5 rivet.??