Phil
I changed the Mk1 Escort/Capri leaf spring rubbers to nolathane as shown. And it still gave me a big headache.
So before going to the stand cross member i decided to change the gearbox cross member back to standard and do some testing for Eurospeed, just made up some 24 x 24 square tubes and ovalled the holes.
The results was 3/4 of the vibration was removed.

. So the world cup cross member with nolathane rubbers is exceptable for everyday use.
I will change back to the standard cross member and test this out. I have a sprigett bearing noise [8~2] so engine has to come out. While the engine is out I will change the gearbox for a taller first 2.71:1 and this should transform it.