Ok, rank amature watch guy here with my first attempt at regulating anything! Decided to pick on my 1 month old OM which was perfectly happy ticking away at +30spd and no apparant care as regards position, night wear, activity level, etc.
Opened her up with a cheap 3 point key, and using Kello software (previously checked ) with my iPhone 4, proceeded to play with the regulator bar. After a few attempts and misses, I Nailed it with good old fashioned dumb luck. Dead on +.3 to -.2. Unbelievably easy.
Just be careful and follow directions (found elsewhere on line. Here's the link i used...)
I will follow up after monitoring for a few days, but man, this is sweet. Amazing accuracy for a <$175 super tough dive watch with an awesome bracelet.
If you have a steady hand, give it a try.