Guidance on jet sizes please

[ivorbiggin]

So  its a GSX 1100 E? 1074cc motor with BS34 carbs. Pod filters and will be running a 4 into 1 with straight through muffler.

Im guessing i need to upsize the jets, but where to start.

Original mains are 107.5, im thinking to upsize to 127.5, original pilots are 45 and im thinking to up them to 47.5.

Good starting point or do you guys think i should aim higher or lower?

Oh yeah, 1 more question, no actually its 2.

3 of the pilot screws were siezed, i had to slot the housing to get them out and destroyed the scews in the process, they are the long type with no welch cap.  I do have a set of the shorter type from another set of carbs, they appear to be idetical except in length, and fit into the housings. Any reason why i cant use them?  lastly (and then i promise to bugger off and leave you all in peace for the evening) the pilot screw o rings, are they part number N133.037?

Edited September 24, 2019 by ivorbiggin

[Ibbo]

Contact grumpy for an air corrector kit, and a set of mains. Mine was spot on first time.