Laserscript user forum

I fear that I have some worn bearings on the aluminium pulley next to the engraving belt. Has anyone replaced these before? Can HPC provide them and does anyone know an approximate cost to replace them?

When I'm engraving something my machine quite often alters the engraving position part way through. It splits the image and renders whatever I'm doing useless. When the image splits I can't seem to get the machine back to the original datum point. Any ideas coz it's costing me time and money and I'v...