I am going to say that this is a sound deadener that was original to all
TR's. I have a NOS TR6 cover with the nice, white bumpy stuff still on it in
like new condition. I have no clue what it's make up is. I have made a few
weak attempts to duplicate it while restoring some TR's without much success.
I also could not figure out why so many TR's do not have any of this
material left. It must get brittle and fall off after a time or a lot of guys
have removed it during restoration. The TRA Judging Standards & Restoration
Guidelines manual for early TR's refers to it as a sound deadener that is
usually light gray in color.
Cheers,
Darrell
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