Thanks Art for the info on the lgb offerring. Those look good for sure, but I prefer the look of Gary's stops somehow.
Gary, another option ( that avoids the delay and hassle of shipping) would be for me to just buy a 3D printer and pay you a fee for your design file for O tubular track. I see Amazon has printers for about $300, though I have no idea what features I should be looking for?
Rod