cheers Fontyyy ! the effort you've put into that reply is much appreciated !
it reads as total sense with regards to what i'm feeling with my 28. all i've done is the pipes. maybe i'll try the flywheel now i know it's nothing unusual to be underwhelmed by the top end. i'm not after stupid power but a bit more urgency up top would be nice. i just love the 28 and wanna try and keep it as standard as possible engine wise.

thanks again !

Dave.