Hi, This is my first attempt at Z-Scale (Or any other scale model railroading). In the last 60 days I have purchased near $500 in Micro-Trains Z-Scale Micro-Track and switches. Plus 3 different AZL locomotives & 13 pieces of rolling stock. Even though I have restored cars from the ground up, done some lathe work, scratch built functioning firearms, and old camera repair, this Z-Scale has me beat. For my initial layout I have 8 Micro-Track switches. If I were to only use a single oval track without turnouts all would be well. However placing Micro-Track turnouts into the system has totally stopped my ability to have a functioning layout. Out of the 8 switches: 1 works good, 2 others mostly work (Always work on the straight through with occasional stoppages using the turnout), and 5 do not allow a single train to cross them without stalling, mostly when using the turnout setting. I can provide full throttle and power the locomotive through these switches on many occasions & power through the switch, but anything slower then flat out results in stalling. I have read available helpful hints I have found online (There are not many). I have measured, honed, & filed, all spots on the switches that inspection/testing indicates that any jostling of the train occurs when it passes through a switch. I have ensured that the width between the plastic re-railing pieces on each cutout are sufficient to not stifle wheels on the engines. I have spent nearly every day of the last 2 months changing out between switches and going over every one & any conceivable reason that the switches may be causing problems. While the tolerances of the switches are in my opinion, not very good, I see no reason why they now should not function at least most of the time. I do notice changes in the behavior of the engines as I make changes to rough spots on each switch. But, no amount of work allows these switches to become smooth enough to fix the stalling problem. The single thing I notice about the one switch that does work perfectly is that it has the smoothest movement of locomotives/rolling stock when transiting that switch, than any of the others. I was beginning to believe that the problem is with the locomotives and not totally caused by the track. When engines stall (Always with one set of trucks at or on the frogs), I can often simply lightly tap on the locomotive, I can see the headlight flicker. Sometimes this causes the engine to move on through the switch. Most other times it results in the locomotive still not moving, or only moving a short distance and then stalling again, still within the switch. I am thinking maybe the AZL locomotives have poor electrical pickups that lose contact when the engine is jostled over the rough switches? I have removed the bodies, but cannot see how to remove the trucks from the locomotives to see if they are functioning correctly. Finally, please do not just suggest another brand of switch. I want to do everything I can first to work through all possibilities with these switches before I throw away $285 of new switches. So here are my questions for which I am hoping someone can provide detailed solutions. 1) Anyone have knowledge of how AZL locomotives are disassembled? Is it feasible to do so? 2) Anyone know if AZL locomotives just do not to function correctly with Micro-Trains switches? If so do other brands of locomotives possibly do better with these switches? 3) Anyone able to provide details on modifications/tuning that can be done to Micro-Train switches to resolve my issues? 4) Anyone know who specializes in repairing/tuning this brand switches? I would be willing to pay for tuned, working switches from someone who has a good reputation at this. 5) Anyone specialize in repairing AZL locomotives, or who specializes in modifications to these locomotives to provide better connectivity? If that if fact is the issue....... Thanks in advance.