Just another observation i have been taking my inhaler twice a day morning and night but after 2 full weeks now there still is not any mayor increase in my peak flow result. I am still getting an average score of 600.
Bit strange...I passed my class 1 with a peak flow of 600-650 (6ft also) and they were aware of my asthma and inhaler usage. Doctor seemed very happy with it at the time. I wouldnt worry about increasing it that much as it wont really go anywhere.
Just get in shape and keep taking the inhaler. Get a letter from your GP saying it has never troubled you, never hospitalised or had attacks etc. Go visit a respiratory clinic in hospital a letter off them as well.
If its never troubled you before then its suprising that it would keep you from passing the medical. Unless the stuff below (which I dont really understand) is a big problem.
at 7.81 liters and I got an FEV1 % of 62