sorry for chiming in but the search found this topic for me.

My MY10 with 60thou ks has an almost supercharger like noise in second gear only. must say it does sound cool but its strange in only 1 gear.

i have no crunching or anything of that sort with 2nd. maybe FHI snuck in a agressive grind helical for second knowing its possibly the most stressed launch gear? just a guess. just want to know if its normal/ wear and tear?