FWIW all Avgas has for some years been 100LL (low lead) so is legal as race fuel.
Of course you have to wonder about those people whose exhausts make your eyes water, not to mention how they get it over since all the ferry allows you is one bike tank full.
The only real delay i can see is as per TT in June lack of Marshals during practice week........let hope not though.... roll on saturday evening....
Have a Safe and Enjoyable Manx one and all Irish Ago.... :shock: