[Fiddybux]

I had a 9x1 (brushed) in my 501x today and the top end was shit!

Admitedly I am running the stock spur (96t), but you reckon looseing the drive train a notch or two may be the answer? I'll definitely try this.

Got a 78t and 81t B4 spurs on the way....so hoping this will make a vast difference.

Any other advice on why my 501x was slow (bearing in mind it's stock and just built)?

Cheers.