You need to disassemble and use some scotch-brite pads on a Dremel or die grinder on the aluminum, and if that’s rust on the reeds, then clean or replace.
No sealer on anything on the intake side of things, only exhaust side.
Presumably, out of fear of sucking some of the sealer in to the crankcase? I’m trying to re use the existing gaskets that are fairly good.I thought a little carefully applied sealer might help take up minor irregularities .
I like to give them a light coating of grease. Not enough to plug any small holes, but enough to help the parts come apart cleanly later on and to help seal them.
When my old boss went to Johnson school in 1966, they told him to oil the gaskets. (Maybe Frank went to the same school?) Granted those were supposed to be NEW gaskets; but I have always oiled them, new or used and have never had a problem. It makes them come apart again easily, too. Of course, if they’re ripped, that’s a whole different story.