Hi Clegg just caught up with things again after putting a second hard drive in and getting totally lost trying to be smart a-sed !!
To try and answer your other question, yes the Nos 1,2 &3 sail sets are for different wind strengths and this is reflected in the different weights of material/areas/mast heights etc. The time to change down to 2's then 3's will vary between yacht designs. There is a compromise that will depend on your sailing water ie at Gosport where I sail it is more often light winds, consequently as yet I have only purchased a No1 suit and can sail most meetings. Around Fleetwood way I think the wind might be fresher on average and may suit No2's, but maybe someone from that neck of the woods can advise.
Best regards
Mike