can't remove broken tension leg

One of the tension legs supporting a wing (aka backrest) on my Getaway broke. it is bolted into the end cap of the wing, and the bolt is so frozen that it won't come loose, sso I can;t replace it. I'm nervous about using a torch because, although the end cap is cast metal, the wing itself is a resin, and the torch might burn it. Might or might not. Any ideas? Anyone with experience removing that particular frozen bolt?

Remove the wing cover (blue mesh material). The seat itself is aluminum. The bolt threads into a tapped hole in the casting. Corrosion has caused the issue, so a penetrating fluid and or heat can help break it free. Heat the casting close to the bolt hole, if at all possible.

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)

Again Matt, thanks for the quick and cogent reply. Best to you.

On a related note, I have trouble pinning one of the wing sides up and down. With the wing down, I can't pin the forward leg, and with the wing up, I can't pin the aft leg. I can adjust one of the legs on the cross bar, but not the other.
Does anyone have a tip for adjusting these?

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Yet another Bob!
"Firefly" - 2012 Hobie Getaway with wings and spinnaker
"Sparky" - 1978 Sunfish (OK, it's not a Hobie, but it's a fun little craft)
Too many canoes and kayaks

The boat could be twisted? If on a beach and uneven ground?

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)

No, Matt, it's on a trailer or in the water. I gave it some thought, and I think if I loosen up the adjustable leg, pin both legs, then tighten the adjustable leg again, it'll be OK.

_________________
Yet another Bob!
"Firefly" - 2012 Hobie Getaway with wings and spinnaker
"Sparky" - 1978 Sunfish (OK, it's not a Hobie, but it's a fun little craft)
Too many canoes and kayaks