Anyone have experience pulling this style of chainplate? Photo uploaded
here: https://svviolethour.com/chainplate/

Wally's site also has a good picture of one once it's open:
http://www.wbryant.com/StellaBoat/Projects/newrig/cplates/cplates.htm

Wally says his were bedded in silicone, which probably made it really easy
to pull, but mine don't appear to be silicone - some white sealant/adhesive
which I'm afraid might be 4200 or in the worst case 5200. The backing block
is adhered to the fiberglass deck undersurface, and to the bolts of the
U-bolt.

But mostly it's hard to pull because the block has nothing good to grip on,
and it's in a tight location with bulkheads / cabinetry blocking access to
two sides.

Anyone have tips for how they did it? Did the backing block come off
easily, or were there some tricks / gotchas?

I've tried: vice grips, flathead screwdrivers used as wedges and hammered
on the end, heat gun, pulling up on the U-bolt above deck, and trying to
pull down the backing block using the threaded rod itself (over-tensioning
it - I stopped this before it got too scary - don't want to break it).

The next things I can try are: torch (stronger than a heat gun for melting
glue, but I don't want to burn the fiberglass or set something on fire).
More hammering on wedges.

-Patrick
1984 C&C LF38
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