I found and fixed another little problem with the original build. After my test drives, I've seen a few drops of oil on my driveway under the car. I looked, and it sure looked like it was coming from the front crankshaft seal, so I pulled the balancer/crankshaft pulley. BTW, that's another job that's easier on a 3800 than on a stock Fiero. For one thing, the dust cover at the flywheel/flex plate is very easy to remove, and there's a little notch there that looks like it was just made to allow you to clamp the ring gear in place with vice grips so you can remove the pulley bolt.
But when I removed the pulley, there was no oil on its back side, and the seal looked fine. I put a new seal in anyway and searched for the source of the oil. Finally, I found a bolt hole on the timing cover with no bolt in it. The hole was hidden by some wiring and not readily visible. The oil appeared to be weeping from that hole, and trickling down to where the crankshaft pulley attaches. I put a bolt in the hole and went on another test drive. The dripping appears to be fixed.