Thanks Again John
i recalled in the past you mentioned something about taking in more mouthpiece – i found i can make very slight throat-air adjustments to alter the pitch, instead of using lip pressure to change the pitch which tends to make larger pitch adjustments.
Interestingly i also found it stabalised the Low C pitch which i was having slight problems with.
Back to work on the Rubank elementary methods book – about 3/4 ways through which is the equivalent of doing grade 4 abrsm music sheets. some good finger licking exercises in there!
Best Wishes