Quote Originally Posted by BMKal View Post
I've used a hex driver that's part of one of my socket sets, and the ratchet handle from the socket set.

Got the horizontal bolts as tight as I can, but can still move the lights with very little effort. I could probably put a cheater bar over the ratchet handle for a bit more leverage, but not too keen on this idea. Knowing my luck, I'll break something.
My suggestion for stainless bolts is to lubricate them with suitable anti seize paste, that allows them to reach their design clamping load without shearing off.