FlashG

Hi Folks, Newbie here. I have a Rex bought primarily for canvas work , but I want to recover a nice old leather chair. I struggled with it initially. I put the large plastic wheel from Sailrite and it worked much better, but still needed a lot of finesse to start and stitch slowly. I found a used Consew with servo and syncro and I snagged it up. Works much better than I could ever get the Rex to sew. The Rex went under the workbench. The Consew came with the original factory OEM servo motor. I'd like to mount that to the Rex so I can do Zig-zag stitching. I'd like to use the timing belt on the Rex upgrade. The OEM belts say XL - I assume they are metric, 5mm pitch. I am a bit confused because Sailrite sells pulley/belts that are 1/5" pitch. Can someone please verify that the pitch on the OEM belts on the Rex are 5mm XL? So now I need a pulley for the retrofit servo to work with the large plastic Sailrite pulley. The servo has a 15mm shaft and a key slot. I haven't been able to find one on-line. Would any of you folks with 3-D printers be willing to print a couple and sell them to me? I'm not sure the number of teeth, so I'd like to try a few sizes from 16 - 30 teeth, or?