I wish JLCPCB would not require the entire parts selection process to be repeated if I "go back" to select another pick&place file, but leave the BOM file as it was... for my board that step alone takes 10..15 minutes, just to be able to check the apparently often problematic parts placement again. Or is there another tool somewhere, that one could use to check the placement of components (orientation, offset from pads), other than the JLCPCB ordering form? Can that behavior be altered at some point in time? :)