I daresay he'll respond himself but ppaulusz has posted in a recent thread describing how he adjusted his VHP. It was within the last couple of weeks so you could probably find it if you searched backwards. I followed up with him (because I've just bought an NIB VHP myself and he was kind enough to e-mail me the ETA Service manual on the watch. I've read the instructions on making the adjustment and it doesn't sound all that difficult though I haven't tried it. I've only had the watch two days so adjustment might be a little premature.Fellow watch nerds!
I have a Longines Conquest VHP watch that runs too fast. Faster than the 10 seconds per year that Longines advertises with. My watch gains 5 seconds per month. Almost a minute per year.
I have been keeping an eye on it, for a few months now, and it is very consistent at gaining one second every 6.5 days.
It might be due for a new battery since it is almost 8 years old. The second sweep still moves every second though.
It has been quite good so far, although I have not paid it as much attention before. I think it used to be one or two seconds out per month.
Anyone else has experiences with a VHP? I read that the rate can be adjusted when serviced. Is that a good idea? Who could do that?
It is a 1999 Conquest Perpetual Calendar Calibre 546. It has 'L1.632.4' inscribed on the back. Not too sure what that stands for.
If ppaulusz doesn't offer help, I could probably e-mail you the book. Send me a pm if you want me to, but don't expect any detailed advice for obvious reasons!