by GT Guy » Wed Mar 16, 2016 10:24 pm
I have just fitted a 38mm to my RB20. Its currently got a 190 main and a 45 pilot in it, second clip from top. Otherwise factory settings. Darrell Taylor suggested a 190 - 200 main as he felt the 170 standard was too lean. Came back from Modrapheniacs at an average of 65 on the motorway including a flat out thrash for the last mile. Plug was by no means lean. I haven't finished tinkering yet though.
Hope that helps