Thanks for reply.
Careful inspection of the head shows no sign of build up, but I take the point that it may be pressurizing inside. I used to have some success cleaning the old Inkjets with a cotton bud and ‘serviceol’ but I don’t have much kit while in the US
This one you only have to buy the black, but it’s still a waste of money - if there was something true about this hesitation. This statement came from the Lexmark troubleshooting menu, but for the life of me I cannot see why the two symptoms are related. RB