I have a newer model Husqvarna 125 B blower. I had to change the fuel lines (apparently a common problem), but after reassembling it, I can't keep it running. I have replaced the lines, fuel bubble, carburetor, and carb gaskets, and spark plug. I have double checked the fuel line assembly and it is correct (filter to carb, carb out to suction on pump, out from pump bubble to return into tank). What happens is, it turns over with full choke as it should. I then put it on half choke and it starts and keeps running. Every time I turn off the choke and give it gas, it dies. Does anyone have advice on the next step? Only thing I can think of to do next is changing the electrics. Or maybe a compression problem? Please help. Thanks.