Kosment thanks for the info!!!!!
I am also looking at the addition of a spool on top of the drum to raised the head location to more the waist level. This will help with the ergonomics and the safety issue when a drum top is open prior to the drill stem being lowered into the drum or when the stem is removed from the drum prior to the top head being installed.
I like the idea of slowing down a bit and using a torque wench instead of a impact gun.
Does anyone else have any suggestions?
thanks