I have a 190H which has been gaining time for a few months now. It is gaining several minutes per month. I am not overly concerned with rate on the watch, but am wondering if it needs to be serviced? what kind of damage can i do by not servicing it? and would it be more costly later? The watch has been used regularly--it has seldom exhausted its power reserve. This is a JLC 8 day movement and it is now out of warranty. Should i send it to Panerai and could someone give me a guess on the cost for service.