Show me someone who never made a mistake and I'll show you someone who never learned anything.  We've all done stuff like this before.  Most recently I had a CEL in my FJ Cruiser shortly after changing the fuel pump.  Code said it was related to an evaporative emissions control leak.  Finally I enlisted my neighbor to help me figure it out because I had to run it through inspection.  After a bunch of testing we finally found that I simply didn't fully seat a connection for the vent hose at the fuel tank.  I was working on it outside with the vehicle on jack stands because it was easier to drop the tank with the tank closer to the ground.  The area where the vent hose connects is right above the driveshaft with the exhaust on the other side.  Not much room to work.  I played hell getting the thing apart, and it uses an o-ring to seal that must have been super dry and just didn't go back together when I reinstalled the tank.  I should have taken a better look at what I did before the CEL popped up, as that should have been the obvious cause.  The moral of the story is:mistakes happen.  I'm not wary of the guy who makes a mistake, only the guy who makes the same one twice. 

What brand cover was that Steve?
So we can avoid same mistake.

I had a leak on my timing cover after I converted to Fox Body front dress.  I had a new cover and seal.   I wonder if this it what my problem is too.   Im also leaning towards the seal not being completely centered on the crankshaft.  The timing cover might be slightly off.  I noticed some oil in the area and on the front sway bar. The oil is only in the lower area and know where else. If I take it off Im going to center the balancer before tightening the timing cover.down. 

I learned that 10 years ago when I took my 289 out of my 65 and dropped that 302 in, I bought no less than 3 timing chain covers before I got one that was the proper one.  Theres also numerous water pumps to fit those!

I discovered that the timing chain cam gear was thicker on a 94 mustang motor I had.  Once I installed the fuel pump eccentric the timing cover wouldn’t sit flat.   I had to surface grind .080 from the one piece eccentric I was using so it would clear the inside of the timing cover.

MS do you think this is a possible cause of your interference?

My brother and I just pulled the bed on an F150 to replace a "Bad" fuel that we thought went defective.  We went to verify voltage at the pump to have none.  To make a long story short... We verified the fuel pump relay was clicking but did not verify the power was leaving it. Replaced relay and it fired up.

Well, that well tend to ruin your day!