Hi there, my lab is having issues with one of our Tecan Evos only being able to correctly scan 4-5 tubes out of 16 in a strip rack. The rest of the tubes show up blank. The tubes scanned appear to be random as repeating the scanning results in different tubes scanned. I have tried cleaning the laser output window with a lint-free wipe and alcohol (as recommended in the manual) as well as the “no tube” sensor, neither of which fixed the problem. Does anyone have any experience in fixing issues with the barcode reader on Tecan Evos?