Installed an Invidia Q300 cat back exhaust today. I have some water dripping out of one of the gaskets. I can't make it any tighter. It's the section from the muffler to the bendy section. Don't think it's normal. Was wondering if I should try the extra gasket or a different brand. I'm going to contact the vendor I purchased it from to see what they say. Anybody have any other suggestions? Thanks in advance.