I just rebuilt the hubs on a set of tubular Mavic rims laced to Normandy hubs. The freewheel is a 5 speed Normandy with a very wide "alpine" gearing. I would guess the wheel set is mid-late 70s. My question is what sort of threading will this freewheel have? I only have a Shimano freewheel puller so I am asking before I drag it to my LBS. If it is something bizarre I will just leave the freewheel on and live with it, but I would really like to get a closer gear ratio on the freewheel.