Quote Originally Posted by Nessism View Post
. One other difference between the KZ and GS VM carbs is that the KZ's typically used 2.0 slides, although some models used 1.5's instead. I think all the GS's used the 1.5's. As I recall the 1.5's are leaner, and GS carbs came with smaller main jets so apparently GS bikes like a leaner mixture than KZ engines.
Higher numbers on the slides mean higher cutaways. Higher cutaways mean more air at part throttle which equals leaner. And vice versa.
Generally, if it's a lean cutaway, there'll be a richer pilot jet and often a richer needle too.
There's more than one way to get good throttle response.