Psionic Audio AKA Lyle, is a pretty busy fellow. He has amps on his channel that have been sitting in his que for months. He stated about a year ago that he was making a shift to focus on YT as a way to boost his business. Watching his channel, you would know that. So he is not exactly free of time. He is posting about 2 videos or more a week! For me, doing even 1 video a week is a challenge. He has a contract with a local guitar store, and of course his own regular clientele, and finally whoever manages to slip in the backdoor.
So how do you find his backdoor? Got me, but I bet if you do, it is going to be a 6+ month wait for everyone else trying to get a sniff. Lyle is a great tech, but he is not what I would consider the best. He has a few concepts that I don't align with. That is a me thing though; regardless I can assure you he does great work that is in the top 1%. All amp techs have a thing...
All I'm really trying to say is that he is going to be tough to get a hold of, and if you do, the wait for your jobs turnaround will be LOOOOONG. That is a good thing actually because it means you found the right tech, bad because you are not in his inner circle.