Question regarding the SSpeed Sprus. Are they known to not be overly durable? I bought a couple and last week ran one in my XXX-SCT and it's toast...or at least it looks too worn for me to use in another race. I has 3 heats and a main on it as well as 20 min or so of practice. Previously I was using the Losi Kevlar spurs and ran one for 3 dace days (so 3X the above) and I could still run the same spur.

The JC spur looks trapezoidal now when looking edge on and the teeth are much shorter than original. I run Robinson Racing pinions.

If they are durable what could I have set up wrong to cause this?