well guys....

after raising the gearbox a little more... and replacing the worn series 2 box with a reco series 4 rx7 gearbox... the problem improved but did not go away...

after some advice from a bloke with a rotorolla i found that my tailshaft was too short... it had 40mm play in it rather than the 25mm i needed.... with the new tailshaft having the extra length into the gearbox, it has taken up the bit of slop it used to have and rid my ute of the vibration problem...

wish i had noticed that earlier...
and also wish the bloody tailshaft guy would have seen that when it was on his hoist...

anyway im not sure who's stuff up it was becuase i gave him the measurement for the original tailshaft but dont know if that measurement was wrong or the shaft itself becuase i didnt bother to measure it when i got it back (a lesson for us all)

anyway not to worry its all fixed now...
time to get stuck into it and finish it off and have the engineer do his thing...

thanks again to all those who helped with this problem... your help is very much appreciated and i hope i can return the favour......