Mr.R wroteOver here in the UK (and possibly Europe?) in the BEARS racing, the use of Desmo, Fuel Injection and Watercooling were banned, you could use 2 of the 3 but not all of them...This was to stop the all conquering 851/888's from running away with the series.
So the Baines brothers had a valve springer made, George Mansfield (RIP) aka Mez Porting did the head work and the bike was known as the "Mezmo" it went on to win the series.
Steve R
do you know if they had to change the cam profiles much to allow for the springs?