Update. Had the carby looked at to stop top end leaning out.
So off to wsid today for the test and tune.
Only 3 passes ( video etc to come)
1st pass staged broke the beam and counted to 3 (still no cage fitted) then off...12.9@122 still leaning out up top
So off with the radials and on with the 205 maxxis
2nd pass 11.16@125 whoohoo a pb
3rd and final pass 11.13@126.02 another pb
So a bitter sweet meet, new street tyre pb but still leaning out top end. So need to do a bit of research, fit a guage and see if holding/correct fuel pressure and maybe try/borrow a electric fuel pump see if the mechanical has finally met it's limit