A fellow at work sent in a bunch of compasses for warranty repair; the rule was that if the bubble was larger than 1cm dia. then that would effect the compass. I sent in 4 compasses, one had a 1 cm bubble and the others had lost up to 1/2 the fluid in the capsule.

Suunto replaced the one with the smaller bubble with an MC-2, but the other models had been discontinued at least 10 years ago and were unrepairable due to a lack of replacement parts. Mike