plus more chester ive got a under going a frame off in my shop and have a few question i took the off the motor and got large bolts and small ones i'm very precise on marking everything with a good size sm tray cabinet trays yet i goofed it happens there are large bolts with of them being different bolts have the markings flat topped w thinned lined crosswith a c in lower right corner of the cross bolts have indented top w thicker lined cross w a o in the lower right corner of the cross the length of the shaft of the is a hair smaller than the and the have slightly higher screw threads on the shaft mm question where do these go or is there no difference the bolts go large large and then the small exterior bolts are the split to per side front or back of motor of heads top row or middle row of the rows of the large ones help