I installed a Mitsubishi Kuro Kage graphite shaft in my Mizuno JPX 825 6 iron without realizing the OEM steelshaft I took out was taper tipped and the Mitsubishi shaft was parallel tipped (I initially measured the OEM shaft above the ferrel at .370). I must have sanded the shaft down enough so it would fit and it did bottom out in the hosel when I assembled the club. This was a trial so when I called to order additional shafts I learned of my error. Question, can I do the additional sanding on the rest of the shafts to make them fit and would that cause a problem with the shaft performance. Would you recommend boring out the hosel for the parallel tip and is that a service you offer and if so, what is the charge?