@mike g. posted:John, those sure look great, I am glad to hear things are moving along in the right direction. I am wondering where did you order or buy the brass pins and receivers for them?
Thanks Mike,
It may look great, however functionality fails. 
I ran into an issue which I am hoping to resolve by tomorrow. When the bridge lifts on the pinned side there is too much interference between stationary track and bridge track. Going over notes from you and others, I have the suspicion the oversized gap between tracks is from not listening/reading/adhering to the note of having hinge point located above the track. I am reprinting the piviot base and support arms to have the pivot point above the rails so that clearances will be minimal. So it takes three days to print the base and 5 hours for each support arm. Just finishing up the base as I type and will print the arms, hopefully today. The alignment pins are steel 1/4-28 which I believe I got a while ago. I hope it is ok to post a link, if not I apologize and will remove. "https://www.amazon.com/gp/product/B00EB1TQ2W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1" They do not have any from this seller, however if you need some I ordered 5 thinking I would get 5 and not 5 bags of 5 lol so pm me if you want some. The hinge pins I had laying around for decades. I am a pack rat for sure. The receiver is the base I 3d printed. I hope I understood your question.
Again thanks
