Started my rebuilt 235 this morning, while it was idling I opened up the oil filter canister and noticed that there isn't any oil coming out of the upper line while its running. Is this normal? My oil level looks good, all new lines. The line going to the top of the filter comes out of the block with a brass T junction. I ran the line out of the top elbow, and capped off the lower one. I'm wondering if I shouldn't reverse that. Any advice?

Thx - Bruce