I have a Bentix-Scintilla Navy Type A-10 mag switch In my 46 j3. For the last 10 years it has worked like it should ie. turned off the engine. I preform the mag check before take off, get 125 rpm drop right and left. Go flying, land, taxie to the hanger, turn the mag to off and the engine won’t shut down. I have to pull the fuel off. I have ohm checked the ground and that checks ok. I’m thinking the problem is the switch itself. Anyone know where to send the switch to get it fixed?
