Leaking PS fluid from Steering input shaft

My steering rack is leaking from the top dust seal (at 158K, not too bad considering). That is the only issue with the steering (no noises, seems to be working well, no other leaks).

I think I will need to replace the rack but I have heard there are issues with rebuilts or aftermarket units plus there is the pulling the rack adventure.

Has anyone tried to remove just the pinion assembly (Subaru calls it the Valve Assembly-Steering Gearbox PN 34113AG04A) and:

1. Rebuild just the Assembly? (Probably $20 in seals)

2. Replace the entire assembly which lists for ~$150? (maybe an issue with mating a new pinion to an old rack?)

Alternatively throw a bottle of Lucas or Bars steering sealant (any good/bad experiences with either?) to hold me until Spring when I can remove the entire steering rack assembly (I do not have a garage).

If the Valve assembly replacement is not an option, can anyone recommend a rebuild source (I saw others said Mavel) or an aftermarket unit they have found reliable or is the Subaru rack the only way to be sure?

Thanks for any ideas.