I ran my tank a few days ago. Everything worked fine until the screw that held the gear to the motor shaft came out. I checked the inside of the tank and I noticed that the motors were hot. I have some fans inside but they don't do much. Should I worry about the heat or should I just leave it alone?
I have found some dust and dirt coming in from the rear tensioning wheels. How should I seal this and still be able to adjust it?
Side view of the wall at the bottom of the photo.