I had Mel do my secondary clutch bushing and hub and was convinced by him that I needed the his helix and spring in the secondary also to which I was concerned how much it would affect my primary. I was told I would most likely have to take weight out of primary but not a lot. Sled is 2009 Crossfire R1000 with Priceless porting, timing key, D&D ypipe, D&D single pipe with boondocker and primary was running 85 gram cat weights with I believe a 185/330 primary spring and needs to run between 7900-8000 RPM's. I put secondary on and took it on a road and would only pull 7600 but came in at around 7000 and took forever to get to 7600, and in a field with 8" of snow would come in at 7000 then bog down to 6700 and slowly climb to 7300. Took weights out and ground them down to 81 grams and now would get 7700-7750 peak and on trail would come in at 7000-7200 and bog down to 6900 and slowly climb to 7700-7750. Trail riding was rough because sometimes I would have to let off throttle because clutching was not building R's so that it could get R's back and you could not pinch it or it would be doggy and had to gradually get into throttle. Next step bought a set of Cutler adjustable 75 gram base weight and put 1.38 grams in tip and 1.98 grams down the center. took it in the field and in 4" snow would come out at 7300 drop down to 7100 and climb to around 7800. pulled 1.98 grams out of center leaving 1.34 grams in tip and same field came in around 7400 drop to 7200 and climbed to 8000 RPM's but if field was longer it may have went over 8000. So it seems to me it may like lots of tip weight and light in the heel? Debating whether to just grind down the heel of these weights or just by the 70 gram Cutler base weights and load the tip until I get it right. Anyone else run this setup and find that a standard cat weight will not work but a tiploaded weight is needed. If I can't get it right I will just put the Priceless helix and spring back in it and set adjustable weights to where I need them. I just want to get this setup right first so I can compare the 2 and I have not heard of 1 bad report of the Formula X-1 setup not working?