Three months ago I had a brand new carburetor installed on my FJ60. Since then, the manifold has warped and I'm in the process of having a new one installed. When they removed the carb to access the mainfold, they discovered that the shop that installed the carb used silicone to create the "gasket"s for the carb. They have since fabbed gaskets with gasket material (is this O.K.?) It's really frustrating trying to find a reputable, competent shop. The one that did the carb had my confidence, until they screwed up bigtime last year on another manifold issue, and the truck really never has run right. They're the ones that recommended replacing the carburetor. I had a two+ year relationship with them and felt like they had it together. This new shop gives me the same impression...the are the Lotus, Rolls, Jag, Porche, Mercedes, etc. experts and are doing a detailed, conscientious install with this manifold..... but we'll see. I don't have the knowledge, tools or buddy backup to tackle stuff like this myself, or I would. Anyway, slight rant there.... but what about that silicone-for-gasket trick???