Slightly off topic but NU Tech is rebuilding his gear box.
I was afraid of that very thing when I bought my cx 20.
Do not fear it.... If needed anyone who ever needs a gearbox rebuilt. Just Pm me. The overall cost is not detemined as I have not got all costs up.
a Brand new rebuilt gear box would be at most $300 at cost.
Having hardened teeth, and using royal purple gear lube. It will last beyond its determined life. 4-5 years of continuous use.