Check fuel pressure and leakdown. Key ON, engine OFF, fuel pump running: Pressure must be 55psi to 61psi and must remain above 50psi for 10 minutes after the pump shuts off. Post your results.
The oil cooler lines can be modified so they will never leak again. Mark the tubes so you don't get them transposed, there is an "in" and an "out". Remove just the original crimp connectors from the aluminum tubes, do not cut the tubes. Measure the distance between the tube ends. Find a shop that makes hydraulic lines. Each line requires two 1/2" compression to 1/2" hydraulic line fittings, they're about $15 each. The hydraulic line is crimped into the fittings. The overall length needs to be 1" longer than the distance between the tube ends on the vehicle. When it's done, it looks like this:
Stick 'em in and tighten 'em up. Engine oil pressure is well under 100psi, the new line assemblies are good to around 3,000psi. Just a little overkill, but they will not leak, unlike all replacements. Total cost is about $90 and a couple of hours of your time.