Hi Team, I have built a 3m x 1.5m x 0.4m beefed up OX cnc router (by beefed up I mean using 2080 with larger gantry plates and lots of supports and bracing). I am using the belt and pinion system with GT2-2mm belt for my x and y axis with the double belt set up. My issue is I am getting lots of belt stretch along my long axis and a smaller amount but still too much along my shorter axis. Is there a trick to setting up the double belt system? Mine don't seem to mesh at all and it seems pointless to have two in there with the way I have done it. I get the theory behind it and I think its a good idea but I just need the top to mesh with the bottom for it to work. I have tried spacing the bottom up a little with a 2mm thick double sided tape, that made the belts mesh slightly better but it can still stretch and overcome the mesh. Next step is to replace with GT3-3mm pitch belt but I would rather sort this with what I have got. Any ideas???