Last night for the heck of it I changed the carriage to one I printed as few weeks ago in PetG. Now the carriage slides back and forth very smooth. Before it would slide but it was not as smooth. Let a print go last night and it printed just fine. So for now it seems to be printing good again but I don't know why the carriage would have made any difference unless the old one not sliding super smooth is what made the difference? Maybe it was missing a step due to slight resistance?