I've watched a couple of his video's, he does a good job.
If you don't want to wait, Summit Racing has "remanufactured" QJets, long as you have a rebuildable core to send back.
Summit Racing QJet:
https://www.summitracing.com/parts/sum-250200
Jet also makes them. Not sure if one is better than the other, Jet are more expensive.
I have 2 QJets that I'm either going to rebuild or go the Summit Racing way.