I have a recently purchased an Easy VTA base, and it’s in use with a TK-850L (Mk 1) arm. Yes, it binds and is noisey when changing VTA. The screw that locks down the arm pillar seems to take the pillar slightly out of vertical which causes the biding against the EASY VTA base pillar hole which generates noise. A touch of lubricant on the pillar helped a little but did not completely fix the problem.
Try loosening the pillar retention screw and then adjusting the VTA. Once everything is adjusted and you have attained the VTA you want, then tighten the screws. Also, make sure the VTA locking screw in the base (next to the arm board) is loose or it will bind or lock the pillar from moving. That can irreparably damage the pillar.
In spite of the problem, I would still recommend the Easy VTA base. It is solid and created tight coupling to the arm board. No sonic signature I can detect. I pretty much set the VTA and forget. Might check it every 6 months to a year.