Hey Brad, I was wondering how you made out with your derailments. I replied to your posting that I was having the same problem with the EZ track #6 crossover. After hours of trying to figure out what was causing the problem. I'll do my best to try and explain how I corrected the problem. I think your problem was identical. There was no problem if the train was switching from the inside track to the outside track. If the train was going straight through the crossover you could hear a bump and see a little jump as the engine hit the beginning of the turnout. The engine would make it through but all the subsequent cars would derail. There is a little black tab on the inside of the switch track ( I'm sure I'm not using the correct terminology ) but when it was set to go straight through the crossover that little black tab was catching the inside ( right side wheels ) wheels of the cars bumping them of the switch rail onto the regular track and causing them to try and go right when in fact they were suppose to go straight. Thus the derailment. I was initially going to try and sand off approx. 1/32 of an inch on that black tab, but I decided to just push it down with my thumb several times and just like a miracle the train went through without derailing. Not believing in such a simple solution I've run the train through the crossover about 25 times today at varying speeds and have not experienced a derailment since I pushed that silly black tab down with my thumb. I tried switching cars, adding weight to the cars etc. before this worked. Let me know how you make out. I know the other turnouts don't have the black tabs. I have had derailments with the other turnouts, but they seem to correct themselves after 2 or 3 derailments. I think Gremlins sneak down into the basement at night and try to sabotage the equipment. Good Luck.......... Don1884