On 25 May, 17:29, jsbrake wrote:
UH: When I pull up, the varios go up... both of 'em.

There's about 2' of silcon tubing in the circuit, all of it at the
panel end. *The second line of TE is silicon from the Y splitter that
I installed, so call that about 4' long. *The pvc lines end at the
central pedestal where the hood and panel are removable, so there's
silicon, then a 5-way quick-connector and then silicon to the
instruments. *I could probably remove about 4-6" of extra silicon, but
it gives me some "play" for being able to get at the quick-connect
without needing extra joints in my arms.

I'm not doing heavy g manoevers, maybe 1.5 g on a pull-up, perhaps
0.75 g on a push-over. *The most g I normally pull is during
thermalling turns.

I think I recall reading in the aircraft notes about a Brunswick
tube. *It appears to be factory made and the slots are well-defined.

An up indication no matter which way you push or pull isn't a matter
of degree of compensation. A few inches of squashy tube won't make a
difference and it sounds like you have relatively modest quantities.

I am puzzled why different manoeuvres have the same effect. It
somewhat suggests multiple pathology.

Two questions ref egg sucking. Pneumatic netto was common in the
seventies, presumably there is no cruise/climb switch in the plumbing
to the Winter?
When you did your leak test did you connect to the Brunswick tube? If
so did you remember to put a piece of wire (about .020") up the slots
and into the plastic test pipe to stop the pipe sealing around the end
of the probe?

Make an exact diagram of all the plumbing. It helps enormously in
keeping track and thinking about what effect a leak at any position
will have.