We are running a stock 02 SRX with loaded 8 bu 10 weight ( 55.5 grams) WWW spring 48/38 helix green spring wrapped at 70. RPM's still running at 8900 - 9000 rpm with 4500 rpm engagement. Tried the red but even up at 90 degree the belt gets sucked in. If I run a carbon fiber belt it will drop about 200 RPM's vs stock belt. I need a blue white blue primary spring to try if anybody has one. That should have the same engagement I believe but with less total force of 111 vs the WWW at 119. Need to get these RPM's down. If anybody has any advice I am willing to listen. Thanks