John C.,
Sorry to hear of your problems. I suggest you stick with your efforts to complete its setup, then try it, then judge it. I have a JoinTech fence and positioning machine mounted on my table saw in place of the normal cast iron side extension table, with a router plate in each. It took me much, much longer than I anticipated to setup my system and JoinTech was not much help at that time because my table saw was then a new model with enough differences that they couldn't much advise me or forewarn me of potential fitment issues I little by little learned I had to deal with. Some were substantial due to differences in JoinTech's planned amount of elevational difference between the mounting holes for the front and back rails of their system (which is similar to that of Incra). For a time I was about ready to send it back. But after all the fiddling to get it adjusted I like it very much, both for sawing and routing. I equipped that saw with a Tenyru Gold Medal combination blade which provides a glue ready edge smoother than what I obtain with my TS 55 with a new Fine Tooth blade. And when I want to shave just a hair off a workpiece, the precision leadscrew (again very much like that of Incra's system) makes that very quick and easy to do, with perfect repeatability if needed. That fence and positioning machine have enabled me to make some very good fitting variably spaced dovetails, too. After adding solid wood edgeing to a piece of plywood, e.g. for a shelf, I use that fence with a table mounted router and double bearing (or top bearing) flush cutting bit. I hook up two dust collection hoses, one to the end of the fence (again similar to Incra except that Incra has a larger DC fitting!), the second to the router underneath the table. This makes for rather good dust collection.
Dave R.