Ok I have a 00 zx6r with a willey co can. I have recently repacked the muffler changed the plugs and installed a k&n air filter, and now the rims are off getting powder coated so I cant ride it. However when I start it up and leave it warm up and rev it, it is missing like a bitch. So I put the old filter back and it still misses the same, so I went back pulled the new plugs and put the old ones back in and still the same. So my question is does anyone think by the bike stitting for a a few weeks it would gum it up so bad that would be missing as bad as it is? Thanks