Hi all, foolishly lost my bike lock keys last week, I think while I was getting changed at work and they fell out of my smallest jersey pocket. Luckily my bike is in the secure car park and touch wood hasn't been nicked so far. Now as the title said it's only one of those cheap £5.99 D locks from Sports Direct, however I have tried the Bic biro method to no success. Anyone got any tips of how to make the biro method work/or any other ways to break the lock?