I know what you mean about solid gear changes,i also had the idle vibs for ages,but have died down now to near what it was with stock mounts in.
Looks like the rears on mine, they were blue from the heat.Its needed the rear brakes sorting since ive had it, so as its MOT is tuesday I thought id best get em sorted. Used the old 280mm discs of the Twister and some nee Brembo pads.
View attachment 11024
View attachment 11025
As can been seen, well overdue!
Had to swap over a caliper as the driverside was seized solid, cant even knock it round with a hammer and punch!!
Stops a lot more smoothly now, should hopefully pass.
Good badge that-loved my old Sierra