Ours have just been changed at 3400 miles (first full service after 15 months).....all wear was even/centred...tyres regularly checked as running at manual spec of 22psi...down to ~3mm on one and a bit more on the other....tracking checked and said to be OK....new tyre depth 9mm....£200 contribution to service bill!!
Dealer is checking with Morgan as to whether they are changing mind on pressures.