Dan Olson Oil Cooler and K&N Oil Filter

OK .... what am I missing? I found that K&N makes a Chevy oil filter with a By-Pass valve built into the filter. HP 3002. Only problem is that it will not thread more that one turn onto a Dan Olson oil cooler. I tried other DO Oil Coolers that I have, same thing. Other filters will, like Wix 51061R fit just fine. The K&N screws onto a stock Chevy nipple just fine. I went to the store with the Dan Olson nipple and got a new K&N Filter, same thing. It only turned 1 turn. The Wix filter at the store screwed onto it just fine. Anyone else have this problem?

Dan Olson Oil Cooler and K&N Oil Filter