Dave Springford wrote:
So with the PZL compass an air bubble is good, Don't overfill!

Wow, I wish I knew that when I refilled it after repairing the melted
hole!

After it started leaking, I did notice that a fairly large bubble would
"hide" very nicely in the instrument. So, once I make the repair, I'll
put in just enough fluid so the bubble hides and see how it works.
Will report back after repairs have been made.

-Tom