I have a slight problem, the rear rim on my grape krate in single speed, have come across on new sturmey 3 speed rear hub 28 hole that I want to get laced into the stock rim, the local bicycle shop told me the stock spokes will not fit and that I need to purchase number 182 spokes in a 2 cross setup, the spokes are 2.50 ea. what do yoiu guys think, is he on the level? thanks HUGH