I know this late to reply, but in looking I found a lot of people complain about the stiction in the TWCS. I did more research and found a good lube for it, although I did not use exactly what was recommended. It completely resolved the stiction.
Since the larger tubes cost a bit much just to try out, I found a 2cc 'sample' bottle of the medium viscosity lube instead of the heavy viscosity that was recommended by the majority of people using this. I also did not want a lot of damping. This certainly did the trick!
NyoGel 760G™ Damping Grease (2cc tube) $3.00
Item #A3-NYE-760G-2cc
It was also $4 for shipping, got to me in a few days. It was purchased from Overready.com.
Here is one of the threads I read that recommend the Nyogel 767a, but like I said I did not want a thicker viscosity or a higher level of damping.
https://theairtacticalassaultgroup.com/forum/showthread.php?t=26498