Great stuff Bwitched.
Can I ask how you are measuring your bbox temp ?
For the last few weeks I have been running a cheap thermocouple
attached to the outside of the bbox , and it shows a variety of temps depending on the load. Light running , around 60C , flat out racing around 90C. This is running Redline Shockproof oil.
Sorry about quoting temp in C , my head doesnt do F.