I'm just getting into z-scale. Wanting to see some, I took a trip down to my friendly neighborhood supplier (40 miles each way) to see what sort of equipment would be available. For track, I settled on Rokuhan because, although I preferred the appearance of Micro-trains track, a much wider variety was available with Rokuhan. A little time has passed. I have made several more track purchases and operated trains a bit. Now have questions. I must say that I am a bit disappointed with Rokuhan (see my post about their controller). I modeled n-scale previously, and atlas flex track with Peco turnouts were a breeze to set up for flawless running. Not so much for Rokuhan sectional. I am currently set up on a foam base, with track held in place with those wonderful Marklin screws. It is what I can set up in the space available, and it makes a solid setup that can hold me for a while. I have purchased 5 Rokuhan turnouts. Three of them work quite well, accommodating an AZL GP38-2 and a Microtrains SD40-2. The other two are another matter. The SD-40 navigates them poorly, requiring a throttle boost to be sure it doesn't stall, and derailing about 20% of the time. The GP-38 has a devil of a time with those 2 turnouts. It stalls every time and if I boost the speed enough to have a chance to pass through, then it derails 80% of the time. I am looking for advice on how to tune up these turnouts for better operation. I don't want to screw them up even further with blind action when there might be some tips that I can glean from the experience of others. Also, is there some polishing/filing that I ought to do where the sections join each other to make a smoother ride over the joints?