As anyone who has taken their fenders off knows, the longevity and re-usability of the pressed cardboard-type factory shim is limited.
When searching for what to use for mine I found a couple different ideas. I won't list them here as I am hoping others that have personally used them (and who knows what else) will chime in with photos and experience.
While at a home improvement store this evening I grabbed a few of the vinyl plank samples (slightly disappointed that there wasn't a Rosewood offering...) so I could compare them to the factory shim when I got home.
In comparing them they are a little thicker so they may not work but I also don't know how compressed the factory one has gotten over time. So I went ahead and stacked a couple to run through the jigsaw. If the thickness doesn't cause a problem I think they will work well.
Again, if you have found something that works for the shim, please chime in as it never hurts to have options and if these are too thick I will be looking for alternatives
Scott
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Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole
But there ain't nothin' wrong with the radio