I have a 454BBC with all MSD dist,box,coil. My boat was running fine when i parked it this winter but i have been out 5 or 6 times this year and i am on battery #3 and its dead? the only thing that seems wrong is the dist makes a funny noise when the switch is on (but engine not running) when i shake the wires coming out of the dist. plus the RPM gauge seems off to me? I have no ideal what is wrong?? The whole thing started when the boat wouldnt start after running a little or alot but would start no problem the first time. like the timming was off :cry: