I returned to the machining of the carrier block and in my excitement to get back to the shop I checked the print AFTER I had machined the 2.50 section which slips 0.50 inches into the box cam. I got the diameter right on but I continued the 2.50 inch section along the entire length of the carrier. this will of course give more clearance inside the casing but I need advice as to continue to the use the part - material is 12l14- or chalk it up to experience and start over..Gut feeling is that the missing 1/2 inch shouldn\'t make a diffsrence but I need the wisdom of you experienced guys to to me how to proceed.