The driver side booster comes on at 2050 rpm and the passenger side doesn’t come on until 2250. Runs smooth as a sewing machine though. Gonna let it cool down and pull it apart.
Now disconnect the shooters and block the primary boosters and drive it on the transfer slot to see where that ends. From memory you can use some plasticine or paper to do it. If the transfer slot runs out sooner you can raise the float level to get the primary's to come in sooner.