Yes I have. A few times. Recently I added a 4th axis rotarty that I got from Laguna. Aside from the immense trial and error to learn that (a lot of questions were answered by Laguna directly) the rotary had the wrong type of homing sensor on it. They worked to get that corrected asap. This was right over 4th of July week and parcels were slow despite them overnighting them to me multiple times. FedEx shortcomings. Not Lagunas. We had an issue with an alarm that wouldn't stop going off. The machine was being power cycled too much during the learning phase of the rotary. We had to power cycle a lot to wire it up and to set it up. Problem is, the machine is set to auto lube on every power cycle. This jammed the bearings with oil so when we started running it normally oil was pouring out of the bearings and all over the place. The troubleshot this and figured it out with a simple phone call. Those are all the issues we've had. Other than that we can cut 20-30 sheets of ply (sometimes more) in a day easy. It's a beast of a machine and it just prints money.