Street Demon tuning experience

I have had two of the 625 Street Demons, both good carbs.
I bought the first one and it ran excellent hot or cold, sold the truck and it went with it.
The second one has really impressed me, my Duster had not been started in two years, changed the battery out, cranked the engine over until I got fuel pressure, pumped the gas twice, it fired and idled.
Fuel stable is a great product.
I noticed the AFR was reading a little rich at idle, but something is crazy with my fuel pressure, the gauge is reading around 9 psi. I am thinking I might have pushed the limit on todays fuel, and some of the sticky crap is messing with my gauge.
Anyways, still impressed with the carb.