I'll second Flipper, I bought a used LL Lil Joe, and the bulk head was trimmed too much. I emailed liquid logic, and as I recall, they sent me a part number, and made it real easy for me to go to my local dealer and make a special order. They sent me the original part, it only took a couple of weeks, and it came out to around $14. I am not sure I could have bought foam that cheap.
"If I'm not there, it means I'm dead...or late!" General W.R. Monger