Hi Mark, and thank you for your detailed input. This is all really good info.
Yes, my battery is in the forward position, as now detailed in the S build manual etc, and yes I have difficulty keeping the nose off on landing (and as mentioned above, the original test pilot commented on this). SVA will sit on her tail, just, but I have never been sure about that as a measure, since fuel moves to the back of the tanks when the tail is pushed down: can you recall what the fuel situation was when you did this?
At present I am considering two temporary options: extra weight to the rear of the (extended) baggage compartment, in the form of a flat sand bag. And/or a lead strip attached at the tail skid.
Hank, I have the conventional lead/acid battery: the Savannah has no shortage of lift and I have no reason to be further reducing weight.
Dan, I have the Condors all round and they are quite heavy, I also have the adjustable seats, so am not sitting hard back as in the original design. And so it all adds up, I think.
Also, I initially had trouble with the full flaps lever position, as you mention: the angle was all wrong, and setting and releasing it was clumsy and difficult. In the upshot, I designed an angled lever that works very well. It is simple, but needs to be fabricated quite precisely. I was fortunate to have a very capable fitter do the required cutting and welding of the outer tube.