Hey guys, I haven't been on this board for a few years but now my 8 yr old has fallen in love with my Bachmann trains and he bought his first Bachmann DCC gp30 on Ebay (used). He was very disappointed to find that the locomotive doesn't really move on the tracks even though all the wheels seem to be spinning. I'm hoping there is a simple solution to this. Is it a weight issue? If you really turn up the power it will start to move very slowly but there is no traction. Any suggestions?