[EdHolland]

Could you tack in some small values, or even add "Gimmicks" outside the cans to test whether it makes a difference? Just a thought.

I suppose the real question is whether the change affects the coupling in each transformer by a significant amount. Also not to be forgotten is that the transformer resonance is also affected by the type of circuit and wiring layout, so the real value of capacitances across each coil are never exactly the book value. 5 - 10 pf is pretty easy to gain or loose.

Cheers

Ed