Hi, new here. I bought a real can of worms for my daughter. Used non running 110. WOW! I had to rebuild motor, & replace the forward gear as old 1was in pieces. Its an auto w/ 1forward gear & reverse. I also had to replace the clutch. My issue is, forward it feels like the clutch is slipping. It wont go over the smallest obsticle. Reverse... its a beast. You can light the tires up no prob. & thats w/ my 200lb body. The replacement clutch is diff than the original. I know reverse is geared down, but the difference is crazy. Im about to order another clutch, like the original 1. Ive seen 2 diff looking clutches online. A dark colored clutch w/ ridges around outside, & a light colored 1 thats smooth . Is their a big difference in these 2 styles? & why doesnt it slip in reverse? Thanks for your input.