HELP - 1971 Camper<br>New engine, new carb., fresh gas, gas tank cleaned and reinstalled, new line from tank to carb, new gas filter, new gas pump. Will start with Ether, runs for about 3 minutes then stalls. Will not re-start without another shot of Ether? Please be gentle, as I am not a mechanic - I know just enough to get me in trouble.....any ideas (aside from getting a real mechanic, as this project has now become a matter of principle and I will NOT quit!