interchangeable gaskets

[TMat]

I have an 850 BG mighty demon on which I decided to change the metering block and bowl gaskets. After changing the gaskets and touching nothing else I now have gas pouring out of the primary boosters as soon as it starts up. It was running fine before I changed the gaskets. I used Holley gaskets , number 108912 for the metering blocks and 108832 for the bowls.

I thought gaskets were interchangeable between Holley and BG. Am I wrong? It has to be the gaskets, everything is untouched including the float levels.

[CarPlayLB]

The gaskets are interchangeable. Make sure thay are oriented correctly....but my first inclination would be to check your needle valve and seat for some foreign matter. This is why I dumped my BG carb. I always had the secondaries doing this to me.
Good luck!

[TMat]

Turns out I did have the wrong holley gaskets, they were for 4150 and 4165 carbs. It works fine with the BG gaskets.