Tightening screw down crown question

Is tightening the crown just enough to keep it in its compressed position enough to maintain its rated 200m water resistance? So far no condensation even when i shower. Problem is if i turn the crown to firmness the watch eventually stops running, but if i keep crown tightened as described above it keeps its normal +6 sec per month. The watch is a timex SS reef gear in the 8th yr of its original lithium battery.

8 years?
Sounds like whatever you're doing works.
No clue why a quartz watch would stop because the crown it wound a bit too firmly.

Actually it started exhibiting this characteristic about a yr ago. Until then i was able to tighten the crown firmly.
Makes me wonder if it has something to do with the battery aging.

foghorn wrote:8 years?
Sounds like whatever you're doing works.
No clue why a quartz watch would stop because the crown it wound a bit too firmly.

Hand-tightening should be enough to keep it water resistant. I also don't understand why tightening down more would cause it to stop.