Just picked up an '84 CT110 in overall very nice shape yesterday. It runs alright, shifts but I have to adjust the clutch, and all the electrical is perfect. One problem is I'm missing the front wheel spacer and I was wondering if any other bikes might be compatible. Just don't want to pay $17 for a chunk of metal. The big problem with this bike currently is that the throttle sticks. It won't idle at less than 1500-2000 rpm by my estimation. I'm pretty sure the throttle itself on the handlebars is the problem, does anyone know if there are any that can be swapped over from another bike, or where I might find one? I wanted to replace it anyway because part of the mount for the brake handle is snapped also. The last thing I had a question about was the gas tank. It's got a bit of surface rust and in the past I've cleaned them with vinegar or rust remover. Just curious if there might be something I can just dump in the tank to help clean it so I don't have to go through that whole process. Seafoam maybe?