Looking for some advice on getting out the pesky yellow stain that seems to keep forming on both sides of my 35ZR from the fuel vents below the fill gap. Thanks in advance...

I'm not exactly sure what you mean without a pic, but I use FSR for fiberglass (gelcoat) stains... it's a blue gel, can be found at any boater's store.

Thanks for the feedback, I'll give it a try.