Hi FF yes I too have been on the course and actually flown with Tim Tucker...great experience. I just wanted a general consensus of opinion as to what people thought about this and indeed if anyone knew anyone doing it. I'm sure there is a great deal of science goes into these things and as an engineer myself I do know how important these things are but on the other hand, they have extended the life on the r44 cadet and whilst this operates at reduced mauw, so have a great deal of conventional 44's. Its a great pity all the "science" they use wasn't better directed at their blades eh? I've flown a 66, awesome machine. I wish you safe flying and thanks for your input. VG