making a short story long...

[butler57]

Truck is a '72 350/350 with HEI, newer Holley 4 barrel, stock. It's been running rich so finally got some time and decided to explore prior to putting it to bed for the winter. All the signs of running rich, fouled plugs, smell of gas etc. Started running poorly in the fall, stumbled on accceleration, poor mileage etc so I assumed carb issues and/or timing as well. Must note that I'm no mechanic.
So far I've changed out the in-line fuel filter, Checked the compression (between 120-135), sprayed around and checked lines for vacuum leaks, new plugs gapped at .045, tested plug wires for arcing and double checked firing order.
While doing this I gave the distributor a twist and it was very loose. Now I've shifted it and I'm assuming screwed up the timing. It's getting gas, two streams squirt into the primaries when I stroke the throttle, but won't start.
Cranks and almost wants to go but won't start. Any advice on next steps would be appreciated.