RD90 arb airlocker is leaking up front

[Bighead]

Both of mine hold pressure for hours.

Mine doesn't cycle very often either.

If it is leaking elsewhere, it is the seals, those are sort of a turd if you don't drive the axle in on the first try.

Been there..done that. Resting the axle on the seal itself or driving it in too deep when replacing.