Sweet! I have their slotted shift knob, I really like it.
When you go 5->2 do you hit each gear on the way down?
The tracks I go to, Roebling has a 5->3 downshift, Sebring has a 5->2 downshift at the hairpin.
I hit each gear on the way down but I don't release the clutch. I'm not there yet... Have you seen the Leh Keen videos where he zips through the gears like a machine.
Sorry to hijack the thread