hi, i own a seawolf that i purchased in 2010, though it's a 2008 model. i recently began noticing a decline in accuracy. it's no longer within cosc specs and is losing about 20 seconds a day. considering its age, i'm guessing it can stand to be serviced. question i have is i've never had a servicing done to any of my watches before, would like to get opinions on whether i should go for the basic maintenance or full overhaul? breitling's web page indicates the basic service should run about $160 usd, while the full service is over $400. any other tips or things i should consider before sending my watch in? the wisdom and experience of this forum is immensely appreciated.