It will not run well and can be a contributor to your stalling problem. Spray some carb cleaner in the holes. They should come out by tapping against a block of wood. You could also blow them out with air. Just be care full where they go.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine