opc wrote:I've attached a picture of the burrs, can anyone tell me if they're badly worn, or if the flat spots on the top are normal?
The flat spots are normal; Grinder burr types explained and How to know Rocky burrs are worn out? elaborate on this point. If they don't feel sharp, replace them. Rocky burrs don't last as long as many seem to think. BTW, do check out the FAQs and Favorites Digest. It links to the threads that answered your questions and probably answers others you have yet to post.