Per Frank:
A better idea is get a length of 1/8 x 1/2" (or is it 5/8 wide?) flat
mild steel from a hardware or home center store, cut it to size, file or
round over the corners so not to tear the top.
Paint it so it doesn't rust inside the top sleeve.
--
Frank Clarici
Toms River, NJ
Down to just a few Sprites