I have a 1991 two-stroke outboard with a carburetor. It was running poorly so I tried replacing the fuel filter. That didn’t help so my mechanic pulled the carburetor and found the bowl full of a clear gel. My mechanic though it might be caused by some reaction in the fuel but wasn’t sure, then tried to soak it in Sea Foam…That didn’t work so he ended up brushing it out. Do you have any ideas what caused the gelling in the carburetor? Would using Sea Foam prevent the problem?