Yeah...all ya gotta do is find one that's the right size
The ones for "big block" r/c cars are only .21 to .30 size, but there is a .46 monster truck engine (Hot Bodies is the company name...maybe they'd have one that's big enough?)
Another thing I just remembered is that some of the DF rear exh. engines use 2 thick O-rings so maybe 2 or even 3 of them to take up the space all along the length of the E. stack?
Those screws look like posts to hook the spring around..but they are 90 degrees to where they should be, aye!?
