Leslie S4T 4th of July Special

I saved this horn to run over this weekend because of its appropriate paint scheme. 6 months ago I had all of the chambers remachined. This is my first time running the horn with the fresh chambers. I first ran the horn on the night of the 2nd and it had a terrible squeal in the 55 that would not behave at all. Out of the whole run there were maybe 2 blasts where the squeal was under control. I sent the audio to a Leslie expert and asked if there was anything I could do to tame the squeal. He provided me with several suggestions. Yesterday I made some double-checks, switched some chambers and ran the horn again. The squeal was gone. I’ve included the audio of the squealer 55 in the last clip of this video if anyone is interested in what it sounded like before.
Happy Independence Day