I have them on an 18' Mountain Cat, Love them, work as advertised, hole shot stockers all the time, pull a little harded in the mid, same on top. Mine has the white spring with red stripes as recomended for my alt. 3-6000'. Best after market weights PERIOD!!!!!!!!!!
What the combo in the weights are you using? I'm loaded short screw and weight in tip, super short screw in the middle. weight is 78 total. was pulling great until I hit 4500K-5500K, only pulling 7800rpms