Grip heads not gripping very strong

[Moseph]

I just got a couple of C stands and the knuckles just aren't strong enough. These are the older Matthews ones with the small oval T handles. When there's any significant load, they slip (I know about arming out to the right of the lockdown). Even a 2x3 flag armed all the way out slips if I don't tighten it extremely hard. I think part of it may be that the cork friction discs are worn out, does anyone know where I can get new ones? Or is it that the older Matthews knuckles just aren't good?

 

[RyanT]

You can try and replace the slip disk, but I doubt it will help that much. Just spend the 30 bucks and buy the american one, you'll never have any issues.

 

[kennedymax]

Or, replace the cork with gasket material from an auto parts store. Works just fine, and also works well for replacing the cork/cushioning masterial on a tripod wedge plate.