This pam watch use an asian clone of a classic workhorse, the 6497. These are a fairly simple model and friendly to assemble and service. I concider the good asian clones, made by Seagull, properly oiled almost/just as good as the swiss. Though some of the asian clones are of a lower grade, more prone to be trouble. Sometimes it's simple fix, a screw that has loosened similar, sometimes they assemble these movements very bad. And never oil. Sometimes the lower grades have more difficult problems, construction flaws. I don't know what's is being used in your 005, here is your alternatives:
1. Get someone to service your movement, risk is though you have a lower grade asian. These can be no trouble, but they can also be problematic,
2. ... So safest bet is to get a new seagull sg-36, fi from Helenarou, and ask someone to oil and install it for you and you are good to go for a long time. 005 has closed caseback, no worries to use a nonengraved movement.