How many miles should a bike have on it before grinding the cylinders?

[PowerDubs_imp]

While waiting on Amazon to deliver my new batch of supplies tomorrow- (various grits sanding pads, black touch ups, clear coat touch ups)- I went back to the garage tonight and burned up what I had left of the existing sand paper pads.

I then turned off some of the overhead lights to try to get better pictures.

This is not the finished product- still needs more grinding, then polish and clearcoat-

[url=http://s164.photobucket.com/user/powerdubs/media/IMG_0312_zpsgglhhx0w.jpg.html]
[url=http://s164.photobucket.com/user/powerdubs/media/IMG_0311_zps8bzv8bzy.jpg.html]
[url=http://s164.photobucket.com/user/powerdubs/media/IMG_0305_zpsdzl5gdwr.jpg.html]