[steamer]

The only thing that I would suggest to change would be the steel furniture nut. After this summers usage and moving over 300 loads of wet dirt, I eventually wore out the nut and threads on the threaded rod.
It was a quick fix, as I just turned the rod end for end and put on a new nut. Even with liberal use of anti size, steel on steel is not a good mix.
My suggestion is to make the nut out of brass and make it the same length as your delrin slider block. The longer the nut the more the pressure is spread out along the threads.
My winter project is to make a new longer nut and I'll post some pictures on my thread.
Rob