Another source is felt boot insoles (but you may not be able to find them if you're not located where pac boots for cold weather are sold). They might be a bit too thick though as they're about 3/8" thick.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.