driver's vent air cylinder

[birdshill123]

I have been doing some "wiring" work on my Bird, 1988 FC35. What fun. I
needed to access the wiring behind the driver's vent. I removed the
grille and the panel for the air vent. Couldnt get the plastic air hose
off so removed the Clippard cylinder. It is just hanging right now. It
looks like somneone has been in there before. I started up the bird and
operated the cylinder to see that it worked OK. It did but at the rod
end of the cylinder there is a small factory hole in the cylinder body.
When the rod is extended a small amount of air leaks at that hole. Is
this normal? It is fine when not extended. I havent hooked everything
back up to see if maybe it is because the cylinder is extended too far
exposing that hole. Maybe if it was attached to the vent door the
cylinder would not fully extend?? Thanks

Bruce