On Dec 6, 7:21*pm, Tom Nau wrote:
On Dec 6, 6:48*pm, Tuno wrote:

The front-hinged canopy on your ASG-29 is probably the same as on my
ASW-28. *When the canopy opens, the tubing has to follow it. *When the
canopy closes, there is a loop of tubing that can kink.

I had exactly the same problem with my 28. The first clue was that
the vario reading changed as the canopy was lowered. I was able to
fix the problem without cutting the lines by splinting them with
another section of tube cut along its length and fixed to the outside
of the kinked tube with cable ties.

Andy