I sent a cylinder to them to have it cut for moon clips and have heard one or two people praise his work but its been a few weeks and I havn't heard anything and I'm wondering if I made a mistake....
It all depends on when Mark get a batch of cylinders to cut. Give him a call if you are curious, he almost always answers the phone and emails take time.
I can't remember the length of time, I think it was a 3 week turnaround. Mark does fine work. Give him a call and he can tell you when he's doing the next batch for your rev. IMHO you didn't make a mistake.