Any leaks in the system?

Mike Rapoport wrote:
I'm not sure of the cause of the descrepancy. It could be water in the
pitot line or an error in the instrument. I am aware that most airplanes
have increasing IAS errors at lower speeds. My issue is that the IAS points
for my airplane seem to be quite a bit higher than in the skimpy flight
manual and higher than other people are getting. The Helio was certified in
the bronze age and only has minimal documentation. There are no detailed
charts for anything.