I'm hoping one (or some) of you more enlightened ones can help me with this problem. I have a 67 Bassman with matching 2x12. Sounds so sweet-like giant gumdrops falling on the forest floor. Until, that is, a serious squelching sound takes over my sonic Valhalla. Then it sounds like jets are taking off in the bachground. Any ideas? Dirty pots? tubes? Rift in the space-time continuum? Help is appreciated.