Racing Fuel Systems

Anybody ever use this stuff? https://www.summitracing.com/search/pro ... =Ascending
I've used it a couple times & now I'm having some issues with a weird looking white deposit on the primary plates & idle mixture screws. I only have one decent pic that shows it.
Yea it's a Qjet but that area isn't very busy.

That's one hurting looking unit

The only fuel fragrance i'd use is a bit of castrol R in the petrol tank

Other than the fuel fragrance, any thoughts on the white deposit?