I am having the same issue with my Gretsch COB snare bottom head. Someone will lend their infinite wisdom to this issue. Be patient.

A low style snare drum head should work for you...Try a Ludwig "X" thin head...Mikey

Or Aquarian American Vintage. They are oversized to compensate for these types of problems.

They also have one called Modern Vintage, but not sure if it is oversized or not.

Thanks guys.Those fast answers are priceless.

Modern vintage are NOT oversized... but they are made from the same material as the American Vintage and in the same thin and medium weights.

As I mentioned in another thread, Aquarian's reference point of .050" ID oversize is their standard-size heads, which already have fairly thick hoops.

Have you tried a Remo snare head?

I fit it with american vintage heads,top and bottom.Also puresound snares.It is by far my FAVORITE sounding snare.

Make sure you check the roundness of the shell. I've had problems with a couple Sound Kings & recently a Super Sound King. Due to the fact that Slingy didn't use a large beaded brass shell, these things went out of round very easily, the Steel shell Festival model does the same thing. Take a tape measurer & check the dimensions side-to-side all the way around the drum. I'll wager that the crimped beds greatly exceed the head measurement width.