A little Update:
Ive been waiting a couple months for Lionel to get some boards back into stock, finally they did
I installed a different RCMC board in the Loco. I was using a board from a PS4 Pacific originally thinking that driver size would have an effect on the chuff rate, this gave the loco a 3 chuff per revolution. I did not find this acceptable. So I decided to go with what I used in my AC-9 conversion which was board from AC-12 cab forward. Both locos have a 16:1 wheel to motor ratio.
As you can see in the video I got my 4 chuffs now. They aren’t in the same spot every time because its not cam/switch driven chuff timing and you’ll notice that on all your legacy locos.
More to come in a new thread for my next Legacy Conversion.