Bill,
You have total different experiance with BME than I have. Long story short. Killed one motor,swapped out,made 4 passes and when pulled engine down found 4 rods cracked at bolt. According to BM I had left the rods torqued in trailer and cold caused oil to turn to catalyst that caused rods to crack. I do live in NC not that cold here between March and Nov. . My last set of BME.
I'm thinking trying what I have some more and then switch to see if any noticeable difference. As close as I can get to ABA test. Probably will be very small and hard to find on ET slip,but where the fun in just switching and not knowing? As Alan Starr told me once if you don't ;earn something new everyday you wasted that day.