Why is it so hard to get good advice !!???

You can read just about anything on the net. Anything. But running 10:1 and over 200 compression it is going to be an ongoing fight to run good on street gas. 91 is not really 91. In the early 70's late 60's they dropped the octane to a ridiculous all time low. To make up for this they changed the way they computed their ratings. 91 at the pump now is actually in the low 80's. All you can do is keep listening to everyone and keep throwing money at it or just sit back, relax and add octane booster @ fill up time.