I have a Craftsman leaf blower that is about 5/6 years old. Two years ago I had to get a new carb for it. The mixture screws are sealed, does need adjusting, I will get it done sometime. The main problem now is that it takes forever to get fuel to it. The primer bulb is doing its job. This started last year and has gotten worse. I can pull on it forever and it does not get fuel to the plug. I hook my electric drill to it/ switch it to start and crank for about 30 seconds before it will fire. Then it runs fine. After shutting off it will start by pulling but after about an hour I have to get the drill out again. Any ideas? Thanks.