90 degree adapter leak

Professor Fate said
A 360...Commando?
Do you possibly mean Magnum?
If it is a Magnum block, I don't believe the early 90* adapters will seal due to different machining in the filter boss.

they'll seal up on a magnum.

unless there's a difference on the early 90* adapters that is not present on the later 90* units.
(besides the angle of the dangle IRT the filter)