40hp 2 stroke missing, What else could it be?

I have a 1994 40hp Sea Pro. It's a pretty simple engine, single carb, 2 stroke.
The carb has been cleaned and adjusted, fresh fuel.
New plugs.
Seems to have good spark on each cylinder. (just visual check)
124psi on each cylinder.

The motor runs rough at idle and low rpm. Here's a video of it running https://youtu.be/F940eGHvvZY

If I adjust the fuel screw I can turn it in until the motor starves for fuel or out until it's loading up but it misses just the same either way, I don't believe it's fuel/carb related.

What wears out on these that could cause this? reeds? weak spark? timing issue? I have tools and multi meters, any checks I can do?

We took it out on the river and it killed a few times during idle.
Thanks for any ideas!

Have a good look at the coils - wipe them off well (they get "gooped up") and check for very small cracks in the casings - it's not uncommon.

If you do replace them I would go with Sierra aftermarket coils - every bit as good as OEM at about half the price.

Good info, Thank You! I will take a good look at the coils tonight and let you know.