I have an 83 Holdsworth Professional which uses the same arrangement, but I have had no problems with the Allen head binder bold.
I would make sure the binder bolt isn't bent, and if it is, I would replace it with one made from hardened steel.
Louis
>
> From: "skip sinatra" <skipsinatra@hotmail.com>
> Date: 2004/11/04 Thu AM 10:21:39 EST
> To: classicrendezvous@bikelist.org, nkilgariff@yahoo.com
> Subject: [CR]Holdsworth Seat Post Binder Bolt Question
>
> I have a 1980 Holdsworth Pro and am wondering if anyone has encountered solved the seat post binder bolt issue? The frame looks like it needs a big bolt-nut assembly, but it came with the
> 5mm allen set-up. I have it tight but it appears to be deflecting the faces
> of the binderbolt lug. Is there a good alternative? I asked Norm K (the resident Holdsworth guru and he suggested I post to the list as he knew of no other solution. Thanks....
>
>
>
> Skip Sinatra
>
> Frog Level VA