>> A year isn't much....
I know, I know, but my first 2-stroke was a '76 RM-125 that I raced from '78-80 and old habits die hard. Let's see....new rings every other race, new piston every other rings, overbore every other piston....after that I rode exclusively 4-strokes until I got a '92 YZ-250 that I rode from '98-99. I could NOT believe it when I tore it down and found everything to NEW specs!!
I was just thinking more of replacing the smaller A with the bigger C (all Pro-X, by the way) for tighter clearances, not because it needs it or anything. Guess I'll just wait till this winter....
I'll spend my money on tires and chain/sprocket instead.
And finally, FWIW, I've been riding since 1975 and this KDX is the best bike I've ever had- bought it used from the 2nd owner, and I'm positive the first owner must've had the suspension worked on because it's fantastic.