My first question is regards to chain maintenance. Is there a non-messy chain lube that I can use? Everything I've used up to this point is spray, and I'm not sure if it's good for the chain. It possibly can't be the best maintenance method. It drips everywhere and I have to clean everything up after. My second question is about tire replacement. I've watched a video on it, where the guy is using a tool to set the tire on. It looks like a car rim, but hollow. Just rounded pipes. Are there tools like this available, or would going to a junk yard and picking up an old car rim and cleaning up suffice? Any suggestions would be great.