i came up with this trick yesterday while flushing the cooling system on my '83 VF750F....the front cylinder drain bolt is hard to reach to re-insert..so i got piece of 1/2" O.D. clear vinyl tubing, slipped it over the shaft of a large phillips head screwdriver, leaving about 1/2" of the hose past the tip and a piece of tape on the handle to stop it from spinning....the 10 mm head of the bolt fits snug inside the tube and lets you start threading the bolt...worked perfectly