I bought a 74 KX125 a little over a year ago with the intentions of making it race ready for the sportsman 125 class. Well, other projects progressed and additional bikes were bought. I was trying to sell it until a couple weeks ago after the first MOVMX race of the season. I raced an ultima class 125 and had a blast. I liked the 125s, so I'm thinking maybe this project needs to be completed and I'll race it and my ultima 125. I'm sure with suspension improvements the bike can be very competitive with the CRs, YZs, AT/MXs, CZs, Hodies and whatever else shows up. But are these motors reliable, and what other advice might anyone have about it?