Using a non standard but exactly matching wax crayons with the same thermal coefficient, (I was assured by a manufacturer), I now have not one but two screwed up (350 and a 380) models giving me the 08,001.44:37045 problem. Although looking at the Xerox tek web site does suggest the Maintenance tray, both have been stripped to reveal nothing untoward here. I have had a look at the print heads and I believe that the print heads are still clogged with this wax ink that failed to exactly melt at initialisation (and cause the error code above). Saying all that it did work well for some weeks previously before these codes arrived. If anyone has a suitable 'solution' for cleaning the print heads in situ or has had a similar cock up, please let me know.