Hey, I have a weird problem. My 305 was running great about two-three weeks ago, no problems starting and staying running. Now when I try to start it, it just cranks and won’t fire up. We checked, timing is right, we are getting spark, we have plenty of fuel and it’s getting into the manifold no problem. What could be causing this to happen? Compression could be a problem I guess, but what would cause the compression to just disappear when letting it sit for a bit?