Pro Fox Coilover Help - loose!

Recently installed a set of 3rd Gen Pro Fox shocks that were just rebuilt by Fox. Love the shocks for my needs BUT when I was off pavement (rutted out gravel roads in this case), I was noticing a lot of metal on metal noise that initially sounded like body mounts or leaf springs. After further inspection I noticed that the center nut on the passenger side coilover was very loose - so loose there was a TON of play between the top plate above the rubber washer at the very top center of the shock… yes, I realize I’m an idiot for not catching this on install, but I assumed that Fox had the shock itself to spec so 100% of my attention was on install to the truck with proper torque when I did the install. This was clearly the source of the noise I was hearing. I tightened up the nut somewhat and in doing so I did turn the piston likely 2-3 turns. Mind you this was with a wrench by hand, no impact or anything but I did spin it. Which brings me to my questions:

What size hex is the top of the piston on these shocks? I’ve gone through all of my standard metric and SAE sizes and they all seem “close” but not close enough or too small…?

What’s the chance I damaged the seals when I turned the piston? Or messed with the tuning / rebound zones?

Having driven (mostly highway) for over a 1000 miles with that nut quite loose how likely did I cause any damage to the shock?

proper torque seems to be 20lb/ft for the center nut, but it certainly seems like I’ve had to get it tighter than that and there is still wiggle in the plate underneath the nut vs. how snug the drivers side is. I don’t want to overtighten and certainly don’t want to turn the piston any more but again am I being overly paranoid?

Also reached out to Fox but of course everyone’s out for the long weekend…

 

Bump. Can someone please help me confirm the size or tool needed to hold the rod steady on top of the Fox Pro Coilovers? Passenger side came loose and I can’t get the thing tightened well enough to not have a gap between the nut at bushing/washer. Seems to be creating more friction / heat at the top of that shock as well for normal driving ?

thanks in advance - getting no response from Fox as of yet…

 

Turning the shock rod at low rpm’s by hand shouldn’t cause any issues. As for the wrench size? No clue

 

thanks - no impact / power tools used so it would have been a slow turn. If there’s a slight bit of play in the top will that cause any major issues. If the suspension is compressed, it seems that is going to loosen up there anyway as the piston moves up and down