I posted this before but i managed to attach a pic so you can see the dent in my front wheel. Its not much but i want it out of there. Can i use a hammer and a piece of wood or cloth between the wheel and the hammer so that it wont mark the wheel?? What do you guys think?? Here... Another thing...a friend of mine needs to replace the cilinder and piston of his WR400 98`. Since he is going to buy everything from Yamaha original parts, can he get a 426 cilinder and piston and fit them in the 400 motor?? Will the 400 head work with the 426 cilinder?? Thanks for the input.