2000 Honda Civic ex, oil leak from under the distributor between the block and head. Shouldn’t be the distributor itself. Replaced distributor o ring, VTEC gaskets, and valve cover gasket all within the last 10 months. What could causing the oil leak?

 

Clean it up good and rev it high, watch for it

 

I have a similar issue, mine is due to the speed sensor on the transmission. I thought it was my distributor as well, but I remembered the bolt holding down the speed sensor is stripped on my transmission. It's leaking transmission fluid all over the same areas you're describing. Check that, worth a shot. Yours might just be loose, careful tightening it. Doesn't need to be super tight, just snug, There is an o-ring on the speed sensor as well, sits inside the transmission housing.

Other than that, there shouldn't be much else. Try wiping everything off, and check again after a short drive.