Intake manifold is it stock..which gaskets to use

(Pissed off)Ran fine for awhile and started leaking out driver rear little and passenger front a little bit..all retorqued and seemed good..did I just not put enough rtv in right spots..or what thought I had it good...if I have to pull off I'm thinking of getting a performer air gap..but some places say it won't fit stock 850TQ..is that correct or??