I know this was a while ago; but starting with the 0000 Steel wool, then fine pumice followed by rottenstone I think is the way to go. I have the same pens; but unlike you no dups; just 1 FP, 1 RB and 1 BP
I have an identical experience with GBS rep. BP seems to be made from different stock than that of RB and FP. Makes no sense to me unless physical location of factory is different
