Question about o rings on intake manifolds

[DClark]

My kitty runs perfect when cold, but when warm, shows signs of an intake leak. After some hunting around,I found that when I sprayed carb cleaner at the junction where those metal flanges ( the ones that connect to the carb boots) meet the head, the idle would rise.
So, I’m assuming the o rings in them are shot.
I ordered some new orings.
When I get them, should I use any rtv or just put them in by themselves ?

[kdo58]

Put them in dry

[shpielers]

+1
new ones should be nice and round, the old ones are likely pancaked thin.