Got it started today and ran it up a few times. Evidently, the prop adapter and/or crankshaft is bent. Luckily I have another DLE 30 for parts or a spare, so I'm gonna change the prop adapter first and see if the problem is cured. If not, I'll swap the cranks.
I had a problem getting it started, as I changed carbs and the new one was set a little different. I got it to pop with the choke on, but instead of firing up on the next flip, it quit. I used my starter, and had to crank it for about 15 seconds to get it to fire. While I was cranking it, fuel was spewing out the exhaust like it was flooded, but I don't see how flipping it by hand could have flooded it. After it started, I had to hold about 1/4 throttle to keep it running. I'm assuming this means its too lean on low speed, but after seeing the bent prop adapter, I didn't want to run it any more to adjust it.
I'll hopefully get these issues sorted by next weekend, and get a maiden finally.