Thanks guys. Just wanted to double check.
Is there ANY reason or riding condition were the 8s would be better.
NO!! BR9ES is what the motor is designed for!
Take it from a guy who has burned down 2x's this season with 9's! The 8's are not what you want, 8's run cooler which is "HOTTER" in the sparkplug world. My burn downs were cause by small jets and "Not enough oil". We went through everything and had to reset, oil, and fuel (jets and rebuild carbs).
As everyone else has said jet down if your to rich... but not to much!
Plugs are much cheaper than a burn down! I have 150's across the board and have no problems now.
Check your oil and fuel mixture, make sure thay are set per factory. SRX's are a fantastic sled but if you

with it to much you'll be in trouble!