Okay, let's have a look at the sail. The sail did NOT seem to have an adjustable head strap. What year is this sail? Does not know... Supposed to be 490 max luff. Let's give it a try. He seemed to have difficulty aiding the mast into the head cap. And there was about 25 cm of downhaul before done. Checked the head and yes the cap was not into mast. Even with that 3 cm extra, we were still looking at too much downhaul AND i did not like how mast fit onto mast base with no sleeve/collar. (Just did a double check - the SW Retro 7.5 did NOT have an open head until 2008 - thus the sail was pre-2008)
Then it just got weird. When I pulled my mast out of the sail, there was a male head cap for a sail stuck in my mast cap !! I showed the fellow why the cap did not fit in. The sail still had a mast cap on the strap ... Asked him if it was his - he said NON. Okay, brought it home and checked the sail with a cap that i use with the 490 - nope, it's there. Oh well, i have a spare mast cap now.
If and when i get a SW Retro 7.5, it will be with open head and from 2-rad or Pat Bergeron $%^&*() - actually now know it just needs to be a SW Retro 7.5 after 2008. Did the measurements - my mast is 491 cm and the Chinook base allows one to move the adjustment piece (what is this called anyway?) down to the bottom - adds another 8 cm from the pulleys. This gives a total of 499 cm - absolutely require an open head on the Retro ie after 2008 !!
After checking the sail I went to the chalet and picked up mast for the North Zeta 3.7 for teaching, BIC Dufour Wing for teaching and light winds, mast base for the BIC Dufour (specialized bases in the day) and my "new" Fanatic BEE LTD 124 (not used by me yet). Next morning put my replacement footstrap on the BEE that I received from a local expert. Still need a fin screw for that one - ordered one on-line and now have some spares too. Almost all set with 3 boards and 4 sails :-) Some of it is old junk (more than 10 years old) , butt like everyone says - JUST GET ON THE WATER and SMILE :-)