Hi, I just installed a Twinsync on two .36s for a Hangar 9 B-25. I've been bench testing them and the synchronization works great. The dead engine feature does not appear to be working at all though. If I have both engines running at a considerably high speed (well above 1500 rpm), and I pinch the fuel line on EITHER one to kill it, the other engine just continues to run at the speed it was at. It doesn't bring the other one down to idle at all. I have tried resetting the idle point, that didn't work. I have no idea what could be wrong, I've re-read the manual and can't see where I'm screwing up. Any ideas?