Ronie
Here For The Long Haul!
I just wanted to put this out there. The 590 hybrid I did a couple of months ago I used JB Weld to close off the main jet and make the carb fully adjustable. This morning I took the carb apart and noticed that the edge of the JB Weld had lifted a bit and I was able to take the plug out with my finger nail, the JB Weld is no longer hard and you can squish it like a piece of rubber. So it looks like it's best to replace the jet because the JB Weld is going to fail sooner or later.