This is to all of you with problems with your magnums and LA's. First of all you need to run a pump on both and most of you guy maybe dont know this but you have to change all the O-rings i found every 8 months. Power- well the O.S may not be a power house but given the right prop, fuel and pump it is awesome!
I have a magnum .46XL with a tower muffler and it is one of the most powerful (size) but also the most reliable ive ever had. If you really want somthing good get an mvvs engine. There is nothing better!