Hi there, I was extremely pleased with these cranks but due to not having my bike set-up correctly I had to keep removing the freewheel to put spacers on so that it would not rub on my frame. So ended up heating the centre bit to expanded it to get it off and I think this cracked some of the threads on the cranks. I then went to gap to a curb on the way home from work and ended up on the floor, I origionly thought that it had skipped but then tried to pedal and it just kept spinning. I was using these cranks with a 3mm spacer from tarty and an ENO. Was thinking of getting a new pair of these as they feel really stiff compared to when I had my tensiles on my pitbull. With a bashring and a new freewheel. Then sell the ENO. Any help/advice is highly appreciated. Thanks Scott.