1996 Ford Taurus Cranks but won't start

Lots of history here. Have a 96 Ford Taurus 3.0 OHV. Drove the car, unbeknownst to me a radiator hose was leaking. Had no idea until several miles up the road I tried turning the heater on and there was no heat. Looked at the temperature hand and it was warmer than normal but not overheated, if there is such a thing. To make a long story short, it warped a head. Took the heads off and to a machine shop. 12 tousandths later I had good heads. Put the car back together and now it will crank but won't start. Getting fuel. Getting spark. The timing belt is fine. It acts like it wants to start when you first try to start it until it floods the cylinders with gas and fouls the plugs. I have no idea where to start looking for the problem. Any ideas would be greatly appreciated.
We have checked all of the harness connecters and they are correct. This was a fleet vehicle and has excellent maintenance records.


Update: Took out the spark plugs and let the cylinders dry overnight. 6 new spark plugs later with dry cylinders, the car starts and runs. Now is idling smooth in park, when you shift into gear starts to idle rough, but once above 2000 rpms, motor smooths out.

In response to Blondemommy, the heads were pressure checked also. Motor runs great once above 2000 rpms. No loss of power that low compression would indicate. Thank you so much for response. I have had this car for 2+ years and love it. No service engine or check engine lights. No codes to read. Some of the spark plug wires were arcing off of the exhaust manifold so we replaced them but it didn't seem to help the miss. Now I am into this car for about 300$ in repairs. I just don't know what to check next or even if it is worth it.