I'm looking for help on which color of no-turn washers should be used when using a Nexus 7 spd coaster brake hub with an old frame that has rear facing drop outs? I went to Sheldon Brown's site and only saw suggestions for degrees up to 90* (vertical drop outs). I'm guessing since my drop outs face rearward, I have about a 145* angle. Also, do I need one of those colored washers on both sides of the hub or just the sprocket side? I bought the hub used so I don't have any hardware. All suggestions are much appreciated.