Hi,
Can you tell me what rating the tails are (a close up photo of the writing between the three prongs would do the trick)?
Tesla is selling UMCs with de-rated tails in Australia, where they were previously fully rated.
If you replace the tails with US tails, you can sell the whole UMC kit in the US. If the tails you have are the right type, I could use a pair of them (and it is much cheaper to ship them than the whole kit).