No, but that's with the pegs are for (they're just two long screws, that slide into slightly larger holes I drilled in the X-65 base plate). I had to add the pegs specifically because of the X-65. There's was no wiggle, but there was twist, particularly because if I wanted to use the twist axis I had to set the force levels and dead zones quite high to get it to center properly (not really the best HOTAS
I've ever bought). The magnet will grip firmly against the plane it joins with the plate, but its just going to be the coefficient of static friction multiplied by the force applied by the magnet that resists forces along that plane. Pushing the stick in the X and Y axis is working against the magnetic force as with a lever, but not so with the twist.
All that said, it didn't *easily* twist, but it would twist a few degrees from time to time when I was really cranking on the twist axis and that was annoying. A 120lb magnet by itself might do it... or (and I thought of this way too late) just a thin rubber or anti-slip layer between the magnet and the plate.
For the X-65 alone, though, it's mostly just academic because it does come with some nice, built-in mounting holes. I've seen people using VESA-standard pole mounts clamped to the arms of their chair for their HOTAS
kit lately, and I think that's a great idea, and not too expensive (though you'd still have the original mounting problem).http://www.amazon.com/Bracket-Pole-Mount-VESA75-100/dp/B00BCRRVD4/ref=pd_cp_e_2
It would be nice if HOTAS
manufacturers just adopted one of the VESA standards.
edit: Oh, and don't take the Amazon link as an endorsement, I've seen the same product elsewhere for much cheaper, just can't remember where. Also, it's the message board that's changing every occurrence of the word HOTAS
to a link to Amazon, right? Hope so.