351w condensation in distributor cap

1982 351w complete tune up in February. Everything from skidim. Sent them pictures of distributor and found that I have an 86 and up distributor. So they sent all the right stuff. Boat ran great first weekend. Then it sat for about a month and when I took it out again it ran fine for 10 minutes and then started cutting out. So I turned back towards the dock. By the time I limped back to the dock it wouldn’t even run. Got it started finally and limped into dock. Pulled dist cap and there was condensation and a little corrosion. Cleaned the contacts and rotor and wiped it all down. Let it sit for a couple hours and then it wouldn’t start at all. Waited over night and still no start. Had to leave the lake house and head home so couldn’t do voltage tests on everything. Could I have burned something up limping back for 20 minutes like that? It’s getting fuel into the carb. I’m trying to not order $200 in parts and just change it all out when I get back there.

I have had good results running a GM HEI distributor in my 351's . I have three of them on my 351 equipped boats all are running great.

I do have the gasket on the cap and I do have points. I looked at the points when I cleaned all the contacts on the cap but I didn’t see corrosion on the breaker points. To be thorough I will clean the points first thing when I get back and then check for spark.

Got back to the boat and cleaned points and contacts in distributor. It took 3 attempts with the engine cranking before the boat finally started. Set timing as it was off a little once I got it running. It’s idling perfect at about 650 rom. Turn the key off and it struggles to start now. Took 4 or 5 attempts before it finally started. Once it was running I let it run for 10 minutes in neutral. Cool isn’t really hot but the external resistor is really hot. Disconnected the wires to resistor after I turned it off and tested the ohmsaccross it. It was 2.5. Isn’t that too much?