@markcarey
I have this issue with Metamask and wanted to share 2 surprising things: 1) the metamask nonce is 3000+ whereas the correct nonce is 114. I hadn't expected such a gap. I def did not do 3000 txns from this address (ever). 2) when I enter the "custom nonce", it succeeds, but next time, MM wants to send 3000+ again.