Originally Posted by GearNut
Don't cut the studs too short. You would be better off mounting 2 flat straps across the bottom of the tank, long enough for you to install screws spaced wide enough to clear your top tube. Curve the center section of the straps to match the curve on the bottom of the tank if you want to.
I concur, but since I have a torch, I'd op to re-braze the studs to fit the tube.
Why people always (some of) think JB is a cure all solution, beats me. Yes there are some applications it's good for, but not many on a bike.