Leak is definitely from the valve itself? (not just the seal twixt capsule and valve?). If you are going to strip the valve itself, best off changing...
That’s what I would do bud, they’re a pain to split the cigar tube so have a look online and I had best results using scope mounts around it to give...
yeah, that ball or rather it's seal is always what fails. it's an easy repair if you can find one... there's one (the cylindrical seal) on e6ay from...