Backfire turned bad day

Compression is good 190 on all passenger side and 220 210 220 215 on driver side distributer is turning plugs look good so I pulled the heads every thing looks good no marks on pistons from valves no damage to piston tops or cylinder walls .push rods good so I put gas in intake ports 2 valves leak per head and 1 exhaust per head but Idk why it wouldnt start with that much compression no viable sign of valves bent
id check the timing chain...