I wondered if more people use the z lead screw to manually trim the bed when printing the raft. Although the bed height sensor is precise, i am still not able to get the perfect first layer consistently. Often this results in stopping the print after printing the raft, adjusting the Z offset (and store in memory) and retry. I just simple turn both leadscrews a few clicks while printing the raft to adjust the bed height. This might not be as advertised, but the sensor is not precise enough to me and requires multiple iterations to adjust using the z offset. However the 8mm pitch on the leadscrew is to course to perform this manual operation, and i am planning to swap these for 2mm pitch lead screws. I understood that in the past the bigbox is upgraded from 2 to 8mm leadscrews because of z banding, which seems strange to me as the bed is not supported or effected by the leadscrews when correctly installed. Are more people using the manual bed level routine and does changing the leadscrew to 2mm pitch have an effect on print quality?