I just purchased a used 01 426 and need to replace some parts. Could anyone please answere some questions. What's the best chain and sprockets that doesn't break the bank? What type of motor oil to use? What type of air filter to use? Best frame guards for the money? Can you get frame spray paint to cover the worn spot from the boots? Where? Best place to get these items? Thanks so much for your help. I'm looking forward to getting this bike back in shape and doing some riding with my son.