Hi, I am pretty much brand new to cnc and have a few questions. I have purchased a set of plans from solsylva. I have decided to build it pretty much to the renderings of the plans but with much upgraded parts in critical areas. I have solid hardened steel rods for all 3 axis, acme rods for all 3 axis, nice bearing blocks, pillow blocks for the rails ect... My question is this. The acme rod that I ordered came with a derlin nut for each rod. This looks to be some sort of cousin to nylon and although has non existant backlash in its new condition I can see it getting loose in just a few hours if used hard. These nuts are CHEAP and semi easy to replace. Is there another option to using these that will yeild little to zero backlash that will not cost me an arm and a leg?