I had my Hyperlite on and finally got some speed runs in. I only could get 103 out of it so far but it has great reaction. I put my stock back on and noticed right away a slower hookup and did notice that the track seemed to spin out more giving less traction. I got 113 with my stock one on. I need another shim behind the Hyper to align it better with the primary because the belt is up rubbing against the inner sheave of the primary. I think I'm losing power because of this friction. When the stock was on I put the black dust cover in which seemed to align it better. Why can't you run the black dust cover with the Hyper? I would love some good input. Thanks.