225 Slant Six Crank but Won't Start (Fuel but No Spark, Dist. Rotor turns)

Ok folks it looks like it's coming down to bad compression. We hooked up a gauge and the the #1 cylinder is at 75. The rest are at about 45 to 50. My question is now though... what would cause only #1 to be "okay-ish" but the other 5 cylinders to be EQUALLY bd?

I would appreciate any input and suggestions.

Thanks.