if its a case of needing to adjust the cab alittle due to the compression of the pads you have I've always used and old fire hose cut up into squares. Most fire depts has some old hose laying around and will give it away...or maybe you know some one who can get it? it has the cloth type outer shell but a very durable rubber inner shell that makes real good body to frame cushions or anywhere you don't want metal to metal. Use one layer or several. Just an idea
