OK, similar to bluelighting, having trouble with clutching 02 SRX. Running 8dn-20's, 4.5g both holes, w-w-w spring (new), 48/40 Advantedge, Grn spring (new). Engine is new, carbs are spotless, 42.5 pilots, needles stock setting, 148.8, 148.8, 150 mains, stock airbox, Viper reverse gearing, 1.25 Ripsaw track. Powervalves are new and set properly. Deflection and belt height correct. Sled pulls hard with 90* wrap @ 8400 to 70mph, then bogs, rpms drop to about 7400 and just stays flat unless I let off. Have tried 3 belts (8dn) same results. Clutch faces are clean. If I let off just slightly, like 90% power, it does not do it. But it will do it every time at WOT between 65-75 mph depending on snow conditions. I tried various
wraps today from 60 (worse) to 100 (better). Even at 100 wrap it's still there, though somewhat easier to get past that point. Once past about 70-80, you can go WOT again. Anybody have any suggestions, like the title says, I'm stumped!. BTW I am assuming the belt is sucking down in the secondary or am I wrong? 

