Never, ever, ever, use a silicone on a carb. It will turn into a runny gelatinous goo that will run into the carb or engine. A trick I learned a real long time ago is if you ever plan to remove a gasket later on in life you use a very tiny amount of anti seize AKA Never seize on it. Just a film is all I'm talking about. This way when you take it apart it stays in one peace and never sticks where you need to scrape it off the parts. I can't tell you how many times I pulled the weber base gasket, intake, and exhaust off and just reused it over and over. Hell Mopar_JA is running on them now. Water pump is OK, carb base to manifold is OK, Carb top gasket is OK, Head gasket A BIG NO NO, Exhaust a BIG YES. Intake OK, Oil areas like the pan or valve cover is silicone. There are differences between silicones. Not just the color, heat, or resistance. One big thing people overlook is how thick of a seal it makes. The package will tell you the gap it will seal. 1mm to 100mm or so. One of my favorite is LocTite 518 gasket eliminator. I use it around the timing chain cover. Great for areas of good metal to metal contact that does not move.
You might get away with loosing the 5 screws and re-torquing them. You just need to remember what they felt like when removing them. You can check the top with a straight edge.