Bright-Ling,
Thanks for taking the time to explain.
Also, I would be very interested in visiting a local unit to see the "problem" from your side. Realise we little guys can be a pain in the arse - too low / too slow - but as I understood the above problem I had been given a clearance (no clearance limit specified) and the time to break the bad news to me would have been earlier if possible.
I'm sure my view on this is way too simplistic but like I said - any opportunity for an education on the topic would be most welcome!