I have an N scale train-board. The tracks are Fleishman and the digital system is Minitrix. When we bought this digital system, about a year ago, we where told that Minitrix locos run on Fleishman tracks. At the beginning everything was OK and the locos pulled 5-7 cars with no problem at all speeds and on all over the tracks. About 10 months ago I replaced the regular thin wires with 2 mm wires in order to upgrade the electricity wiring. However, since then my locos simply don’t run, they barely move and it’s really frustrating. First I’ve properly cleaned all the tracks and the locos wheels as I do occasionally but nothing has change (since then I’ve cleaned them thoroughly many times and still nothing have changed). I’ve checked all the wires to make sure there are no shortcuts and everything was OK. I even brought a friend who is an electronic engineer and he didn’t find any problem with the wiring. The voltage of all the three circles is 17 volts. I would highly appreciate an advice from anyone who experienced this problem and found a solution.