I am looking for a source for a good deal on jointer/planer blades. My grizzly 12,1/2" planer blades are shot and I need to get new ones. The one Grizzly sells are double sided and are a pain to install. They seem to get nicked every time I put them in and they chip wat to easy. So, where do you get yours from. I don't mind spending money if they are worth it, however the grizzly ones are $33+$8.95 shipping.