Hi All, As I recall there was a discussion a while ago re. freewheels tightening up as they were threaded onto the hub. I had this problem last night when trying to thread a Cyclo three speed freewheel onto a NOS Gnutti small flange hub. The hub was supposed to be English thread and if I tested it with a fixed cog the cog spun on freely. The three speed freewheel also threaded very freely on an Airlite and a Harden hub. I tested with another English thread freewheel and had a similar binding problem. As in the past I put some grinding paste on the threads and eventually got the second freewheel to go on and come off easily, but of course the three speed freewheel I want to use still stuck at about the half way point. Thinking that maybe there was a slight taper on the freewheel threads I reversed the freewheel (small cog inboard) and started to thread it on (still using grinding paste) after some initial resistance and using the freewheel as a die and backing off continuously it suddenly turned freely all the way on the hub. I cleaned of all the paste taking care not to wash it in the bearings, and took a look at the threads which appeared undamaged, and the freewheel now beds solidly on the hub. Not a method that would get you into the Bicycle Engineering Hall of Fame, but it worked. All the best from sometime foggy, sometime sunny Cambria, California