Sorry to hear you still don't have your issue solved yet.
In your first post you mentioned you are using 93 auto fuel. Of course, this time of the year it will be a winter blend ... and you are in Miami, a warm part of the country, so I'm wondering if you are not falling prey to vapor lock?
Here in Ohio, I have had issues running winter blend 93 auto fuel in the spring when the temps here warm up prior to the change over to the summer blended fuel on June 1. Having the warmer temps in Miami as you do, I would imagine there is very little margin when running winter blend auto fuel.
If you have not tried this yet, suggest you consider draining the fuel tank and replace the 93 auto fuel with 100LL and see if you still have the issue. If the issue goes away, consider doing what I do ... run a blend of at least 30% 100LL during those times when the temps are getting warm but the summer blend fuel is not yet available. I truly hate to mix in 100LL with my unleaded auto fuel ... but feel that is better than a loss of power in the air after takeoff.
A couple of other things come to mind:
Have you verified your return fuel flow back to the fuel tank by looking at it with a camera? Also, have you checked the fine filter in the Gascolator?
Good luck on solving your issue.
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