Don't mention that there were some of the old type, because that is just distracting from your message that Loki motors are absolutely reliable.
I understand you thinking, but that's not me. If something happened, good, bad or otherwise, I'm going to tell you. Even if it doesn't immediately help me right now. In the long run, being completely open and honest, even when not required of you will gain you more trust and respect over time. You also don't have to explain why you failed to mention something down the road that may have been pertinent at an earlier point in time.
That's why I was never the best/top salesman. In 20+ years of selling everything from vacuum sweepers, the home audio systems, to $500K power boats, I learned that the top salesmen were always the most dishonest and shady, not always to their customers either, as often it was to the other salesmen. I never made the most money but I never had to cover my butt or worry about what I had said, or not said. If I knew a boat had rotted out stringers in the bilge, even though you couldn't tell, I would tell you. Even if I was showing the boat to an enthusiastic pair of first time boat buyers and could have easily closed the deal, I still pointed it out to them and showed them how to tell, often at the cost of selling that boat. But, I educated them, I showed them what to steer clear of in a used boat. They were always grateful, often eventually buying a boat from me that they had far less problems with and always referring others to me.
So anyway, yes, there have been some CATO's of Loki Research motors, however they have almost exclusively been on older reloads that used the spiral wound liners. Most of the time they just result in a cracked nozzles. On some of these, the casting tubes were much thinner, and had a poor fit in the liner, sometimes causing excessive back burning on the propellant grain. (burning away the casting tube exposing more propellant) Thee is no date code or batch that can be pointed to as sometimes there were casting tubes used in the same batch that were from different tube lots. However, I can easily tell by looking at the casting tube itself. The 38/740 was the most common with the J-712. The simple fix was to wrap yellow masking tape around the grains until they are a very snug fit inside the liner. I said something about back this when I switched to convolute liners as I had a lot of reloads going out that were bagged with tapped up grains. That is about the time when I had identified the cause of any problem motors. I've been using the black convolute liners and a new casting tube manufacturer since early/mid 2012 and I haven't had a problem since. I mention something about it now, because I know there are still older loads floating around out there. They can be safely burned though, but check to see that the grains fit snug to tight in the liner. And when I say there were some problems, I can still count on two hands how many problems there have been since I've taken over Loki Research, and some of those were only replaced nozzles.
All in all, if you purchase a new Loki Research reload
AND you assemble it properly you can be 99.99% confident that it will function* as advertised.
* - The timing function of delay elements will always vary based on temperature and other launch conditions.