This is what mine would do when it started to get hot. It would start spitting out the squirters first then if you let it keep getting hotter it would erupt out the vent tubes. Even after you shut of the engine it would sit there and spit gas out of the squirters until it cooled off.
As was mentioned, I believe this is mostly the result of today’s pump gas formulations.
It would be very interesting to see if you drained the tank and swapped out the fuel for some race gas if the problem went away....... in a true back to back test.
This link was posted on another thread about a different issue, but there is an interesting tidbit about a mod for the boosters percolating;
https://www.tapatalk.com/groups/racingfuelsystems/pro-950-carb-good-base-line-t504.html
