Welcome Graham,
Nice to hear that your bike is in regular use, that's what theyb were built for, like Andy I love the Isle of Man and have had the same experience on "Mad Sunday", going as fast as you can, gritted teeth, going to fall off any minute, and whoosh someone goes past so fast you feel like you are standing still ! My first experince of the Island was getting off the ferry in Douglas (BSA A65) and heading towards Bray Hill campsite, we were stopped at Quarter Bridge as the road was closed for practice, and wham Ago on an MV comes down the hill, what a fantastic noise !
Cheers
Den