340 break in question

I don't know WHY people are so SCARED of RPM on initial fire. 2K is barely off idle for break in purposes. I use 2500 as an ABSOLUTE minimum and vary between that and 4K all through the initial break in process. You're after splash lubrication and you don't get a lot at 2K. As long as you have a good zinc additive in the oil or are running oil with a good amount of zinc in it, you should be fine on the next fire, if you can keep it going this time and above 2K. That's just high idle on the choke.