When I rush a 2-3 upshift I get a little grind. It doesn't happen when I shift slower, only when I'm rushing it, and it still goes into gear, just makes a noise. It sounds just like the non-synchro 'box in the car I ran at Skip Barber. Am I beating out the synchro, or is this a sign of the synchro going bad? Anyone know how many synchs are on the 3rd gear in that gearbox? Anyone else have this problem?