Simon not to change the subject about hp and torque but I noticed you build saws, I assume you mean modify them. Just curious but when you modify a saw do you do any work on the bottom half, crankcase and crank? I ask because if all the work is done strickly to the piston/cylinder and muffler wouldn't it be easier to just do those parts, putem in a box and mail them to whoever instead of mailing the entire saw back and forth. I ask this because I read a few post of a guy sending his saw off to be modifed never got it back. Is there a reason the whole saw must be shipped if the person is willing to buy the modified parts and installing them hisself??