Question about using Sigma 150-600 on Gimbal Head

[Basil]

I recently bought a Sigma 150-600 Contemporary (love it) and have a Carbon Fiber gimbal head for it. I have found that, since the foot only has one screw hole, I can't get it as secure as I'd like. I find that, no matter how tight I try to screw the Arca plate onto the foot, when I pan with the Gimbal head, after a while, the foot comes loose and starts to turn on the plate. I'm just wondering what tricks (if any) those of you with either this lens or the similar Tamron have to mitigate this problem? I think the Sigma Sport lens allows you to screw on the foot at two points, but the C model only has one screw hole on the foot.

Thoughts, ideas?

 

[Loswr]

Does the plate have anti-twist nubs? Could also consider Loctite Blue.

 

[Basil]

Does the plate have anti-twist nubs? Could also consider Loctite Blue.

Not that I can see.

 

[Loswr]

Wimberley recommends the P-30, you can see the nubs at the back.

 

[Deleted member 91053]

This should fit the bill nicely:
http://www.ebay.com/itm/Kiwifotos-100mm-Quick-Release-Lens-Plate-Arca-Swiss-Macro-200mm-300mm-400mm-NIB-/161089062723?hash=item2581a80743:g:-nAAAOxydlFS2~Kw

I have a few of them in various lengths - zero issues over the last few years.

 

[sedwards]

Could the screw be bottoming out in the hole ? with 1/4-20 thread you should be able to get it plenty tight so it wont move .