63 super sea horse woes

[Pleasetow2ramp]

I got a 14 foot fiberglass 63 P 14 that came with the 1963 super seahorse. It’s been quite the project. At first was knocking really bad and slipping out of gear. I did a lot of lurking on the forums and figured out it was the clutch Dog. replaced that and it seemed to be working great but somehow I messed up the pivot pin. I think it missed the hole... it worked fine for two trips and after that had a catastrophic failure out on the lake. Seems that the cradle came out of the shift Rod assembly. I fixed it. Resealed the lower unit new impeller resealed it made sure that the shift rod pivot pin is in the right place. I think the lower is squared for now....
The engine will start and run reliably but will not idle. I have ran a can of seafoam through it. It didn’t seem to change anything. I do see the glass fuel filter with the nylon inside of it is full of gunk do you think that could causing it to idle rough? The carb looks really hard to take apart all the way? Is that it? When I start it you have to give it gas in it will run fine and will scoot around the lake just fine. At low speeds and I can get it down to cruising at around 2 miles an hour but it starts to run really rough at lower RPMs and will die and not idle . any ideas?

 

[Pleasetow2ramp]

40 ho model rd25

 

[jimmbo]

Compression test first
Good strong Spark to both cylinders. Remove flywheel, check condition of points gap a 0.020", if coils are cracked replace. Also look for oil leaking from crankcase seal, leaky seals let air into crankcase and that will cause some hard to diagnose problems
Sounds like more than the carb needs a good cleaning. Those are pretty simple carbs. Just get the proper carb kit, with new float. Remove the core plugs(new ones should be in the kit) to ensure all the crap/crud is removed. A new diaphragm and cleaning for the fuel pump. Fuel lines might need replacing