New Problem. My 2046 Engine runs on new Fastrack but it sparks near the collector assembly. I checked for loose screws and for metal shavings etc. The rollers are in good shape and move freely. After I run the engine for a while the rollers, roller arms, and the entire collector assembly gets hot. I also think this problem sets off the whistle in the tender on occasion.
What's going on? What's wrong here?