ok i have a couple of small problems with my car. first off when i hammer the gas oil spits out, nad i don't know where, i thought it might be from the valve covers but they guy i bought it off of said he just got new ones put on, also he said it had something to do with the breather, he gave me a trick flow filler tube but it does fit snug on the trick flow valve covers, he told me to weld it on to the valve cover, should i do that? or should i weld the hole on the valve cover? making the hole smaller. also one last thing everytime i give it gas a hear a rattling sound, i have no idea what it is but it doesn't sound like its coming from the engine, the guy told me that it made that sound every since he he got the suspension put on nad he never bothered to fix it, what could this be? please help me guys! lol.