Hey gang I need help. I bought new brake pads for the Massey 1655 and both show as the same part on the parts diagram so I ordered two of them. I got them today and pulled the old brake pads out and put the new one in the back which is about a 1/4" thicker then the old one. Problem is now the rotor doesn't go on far enough to allow the caliper with the new brake pad to go on. It is about an 1/8" too much. I don't know if you are supposed to grind one of the new pads to make it work or what. The old pad that was in the caliper was barely worn according to the size of the new ones. The one on the inside is about an 1/8" thick and the new ones are about a 1/2" thick.