What different between the Magnum Hunk of Junk 52 and the ASP 52? I had the Magnum and it was truly a hunk of true junk. It was an on/off type engine. Great top power, but I crashed too many times trying to midrange that engine. I thought ASP and Magnum were the same? Maybe the carb is different? I know the head is different color. Maybe a different head, thus different shim?

Before you fly it, go to 1/3 throttle for a minute, and throttle up, to see if it will quit. Just an advise.