Like many modelers, I opted to use Micro-Engineering turnouts on this layout due to the appearance and the fact that they have a a built in spring mechanism to hold the points in position without the need for any under table mechanical or electrical devices.
While all turnouts need some tweaking prior to installation, I've noticed some disappointing - infuriating actually - issues with the latest batch of Micro Engineering turnouts I obtained.
Actually, it started with some of the first dozen or so - cars and engines derailed regularly at the frog on several of them. At first I suspected the frogs were too high (a common problem with ME from a few years ago). But that wasn't the case here. Closer examination revealed a piece of plastic sticking up above the rail head surface - essentially the plastic filling the insulating gap where the frog connects to the closure rails was sticking up - quite a bit (close to .040-050" by my best estimate. I was able to trim it away on top easily enough, but this same plastic had filled the inside of the rail web - not as easy to remove.
Second issue - the latest batch of turnouts I bought earlier this year have some sort of systemic issues with the throw mechanism since all (okay, 17 out of 20) of the springs don't snap back to one side when they're thrown. In other words, they only stay thrown right or left. It's like the spring has too much tension in one direction and not enough in the opposite direction.
Third issue - much less common - but on several of the turnouts it takes little - very little - force for the rail to spring free of the ties. In one case I'd used a rail cutters to shorten the straight side of the turnout only for the entire rail to come off in my hands.
I'm frankly at a loss for what to do - I have a fair number of these installed (the entire mainline "loop" - and I've gotten savvy enough to know I need to check for these issues and avoid installing any turnouts that exihibit these problems. But I do need turnouts for the peninsulas and don't really want to have to buy 60 turnouts to get 20 that work correctly. And I certainly don't want to have to rebuild the things.
What I'm leaning towards is to leave the ones that are down and working in place - knowing full well that I might have to replace them "someday."
I might just handlay the turnouts for the peninsulas - but that obviously is going to take more time and I really wanted to get all the track in place by the end of the summer. Perhaps "temporary" track (Peco, Atlas, etc...) on the Richford peninsula - enough to finalize the track arrangement? I don't know.