just bought a 91 rx7, Ive had for 3 days now and im experiencing a couple of problems. For one I cannot fill the gas tank above half a tank, no matter how much gas i put in it, it will not go above half a tank and it seems to be sucking gas real fast. Secondly the car ran fine the first two days but now, for example, when im in 3rd gear going about 45 i will hit the gas and after reaching 6000rpm nothing has really happened ive barely accelerated at all...it seems like she's lost a lot of power just overnight...