Some more info....
My LHS doesn't have any pumps so I will have to order. They told me to try and plug one outlet on the pitts, run 16% oil with 5% nitro.
I tried adding about 3 oz of 20% nitro and 12% oil to a full gallon and I put a plug over one outlet. Not much change except maybe it moved the rich spot a little lower on the stick????
They did order 5% fuel for me.