>>9286056Nubs on clear kits require very fine grits to properly sand. At bare minimum you should have at least 3000 grit, but going all the way up to 10,000 and then using a polishing compound on top of that isn't unexpected. God Hand has a set of very high grits you can use.
There was this useful video on Youtube where a JP guy built a clear RG Sazabi and showed off how ridiculous sanding could be, but unfortunately it's been privated. Main thing of note is that he went (arguably) overkill and progressive sanded all the way from 400 grit to 10000 + polishing compound. It's a marvel he didn't go insane.