Hey, so this is my first doser and I believe I set it up right I calibrated it and in calibrating it I used the same setup to prime to the lines with RO water and then I re-primed it after I calibrated it with AFR solution I made. I just tried to manually dose 20ml and noticed it wasn't dosing, So I tried manually priming it and it's making a sound the little rod is spinning but it's not moving any liquid through the lines. Has anyone been faced with this problem before?