My shimano m525 hub had a little play in it so I took it apart, cleaned it, regreased and used new bearings (9 x 3/16 inch from memory) and put it back together. It now seems even more 'grindy'. I used fork grease as it was all I had, and i did notice the cones weren't great but I'm having difficulty getting new ones. Any ideas? Have I torqued the cones up too much?