Hi Glenn,
Here is an image Wink took of the U 505. The white arrow shows where the outer pivot point would have been on the forward dive planes. I think the actual pivot point may have corroded away but you can get a good idea where it would have been -
For the stern, the early and mid IXs (as well as the VIICs) originally had a support bracket at the bottom of the rudders. This went from the bottom of the rudders towards a larger support block. It can be seen below on a VIIC (the IXs had the same arrangement). Note the red arrows show the A-bracket meeting with the bottom of the rudders.
Below can be seen Wink's photo of the stern of U 505. Note that the A-bar is not present on U 505. I think it was originally there but was removed in 43 or 44. I have seen dry-dock shots of U 858, U 873 and U 889 and they all have this A-bar thing missing. So I am reasonably confident that it was not there on U 190.
Cheers,
Dougie
Simon - this is the same A-bar that I was talking about in my message to you