So I picked up a basket case husqvarna 345 for $20 to use as a beginner learning experience. Put on a cheap 350 jug kit (yes china) and new carb. Fuel line shows fuel, plug has spark, but she won't fire up. Adjusted carb to factory workshop numbers. Impulse line appears ok, not pinched. There was one pull where it sounded like it wanted to go when I first tried firing up but nothing since. Where do I go next? Dare I say the dreaded air leak?