I built my own power feed for my X2 using a 12V power window motor and a PWM variable speed motor contoller, so I cant comment on the LMS kit.
But I will say that I do love the power feed. It gives a much nicer finish on your work, especially on flycutting. I usually do the last pass ultra slow...
I dont know if this is of any help to you, but I will throw it out there anyway (never been afraid to say something stupid!!)
100 years ago a machinist I was working with wanted to broach a hex into the end of some drive pegs he had just made.
He took an old broken end mill and ground the 6...