I'm installing an eme 60 in a h9 extra 300 the problem is they have already drilled and installed 1/4-20 t-nuts in the motor mount for the da 60. The eme 60 uses 10-32 t-nuts and i really don't want drill the motor holes bigger for the 1/4-20 screws as it may not be safe to so. Here is what i plan on doing ........ use the 10-32 screws and put those through the existing 1/4-20 t-nuts in the motor mount then use lock nuts and tighten them down. Also the 10-32 screws does not fit snug inside the 1/4-20 t-nuts so they do move round inside them a little bit but i think that once i get them tightened down it should be ok. Does anybody out there think this would be ok.