I've decided to prime my oil pump since the engine has been sitting for about a year - and I'm a bit hesitant to just run it since I've had a lifter eat a cam on the Jeep before... I initially turned the crank and aligned the camshaft ring to the housing with a allen wrench. But - since I have a 3D printer, why not 3D print a solution... So I create this option that would drop down from the top: But I didn't love it because the hole in the housing is larger than the hole in the ring - so there's slope (degrees of movement) when coming from the top with any 'holder'. So I remembered I had a Crown OPDA new in-box in the basement as a 'just in case' part. So I pulled the alignment tool from that and drew up a copy in Fusion 360. Printed it in PLA and the 'arms broke off almost immediately. So I re-printed in ABS-GF: Installed: I've removed and re-installed it twice and it's holding it's shape ok. I Still want to see if I can add a little more thickness to the arms while still allowing them to bend to get into the OPDA ring. So a V3 on the way. I also want to try to print PETG-HF as the GF adds a good bit of texture that I don't love on this copy. Once I get a version I'm happier with - I'll post over on the 3D prints file share thread.