What about 4.5 minutes slow per day? Do you know what the limitation of adjustment is, +/- how many minutes per day? I just received my 6139-6002 and see its running slow. Seller offered a refund. Any info you have on this would be very much appreciated.isupsyclone said:If it's gaining 8 minutes per day it's beyond an "adjustment." It will most likely need a service. Lot of times when a watch gains time it is because the balance wheel isn't going through it's full range of motion due to being gummed up, being magnetized, rubbing on some other part, having a messed up hairspring, etc. Best-case scenario would be that it's magnetized since a simple demagnetization would fix it. If it's a messed up hairspring or balance in general, you could always swap it from parts watch (if you have one). You may have to have a professional check it out.