Still trying to get this 78 running...old mechanic working on it for me ( I know very little)...have drained tank, PO seems to have cleaned it; new fuel pump (walpro); gaslines blown out; fuel pressure tested at filter(new) at about 45#; he says he checked and cleaned(?) all electrical connections; new fuel injectors (ebay) and seals; AFM cleaned. Now he says he checked the TPS, cleaned contacts and it runs "better" but not like it should...aftermarket TPS seems to be only available now thru the zcar place in Ariz at $125.+ Any suggestions before I throw more parts at this thing?