I need some help on my Husqvarna 2100. I want to eventually start a restoration on this saw, but I can NOT get the damn thing running. I don't want to restore something that doesn't run... It has a strong spark, I have rebuilt the carb, 2 times. Soaked it in carb dip overnight. Compression is good. Replaced both crank seals. Nothing, will NOT start. I don't understand does anyone have any tips or tricks? The only thing I can think of is that it does not have a muffler. I dont really want to throw a muffler at it if I can't even get it running, but maybe it needs a muffler to run?