Bone stock 2001 701 superjet only thing done is fit a primer as I had the engine outPosting your Engine Specs and Pics would be helpful.: Engine cc, Carb size, Pipe, etc
Did you also install Flame Arrestors along with the Primer? If so, that will require a lower Pop-Off to match the decreased Pulse Signal.
But all you said was that a Primer was installed...
Didn’t know you could put more in where can I get them in the ukIf they are stock flame arrestors, maybe throw an extra screen in each side.