Forgot to update this with the real problem i found, as reported she was running fine but on monday i noticed the pump straining, sounded very clackety and the belt was squeeking slightly so i popped the pressure tester on again and i was getting just under 180bar as i was sunday after removing 1 shim from cut out side of the regulator. Opening the 12mm bleed a little on the reg to get it to cycle at a fast enough rate let the pressure guage bounce between 140bar and again a smidge under 180bar which is just about spot on but the pump was not straining, then all of a sudden the pressure guage went off the scale at 230bar

, i opened the bleed up a bit more and the preessure fell away, then doing the bleed back up a bit it sat there bouncing between 140 and 180 ish again for around 2 minutes.........................
Took the decision to pull the reg off again and get it on the bench, this time i didnt just take the bung and cap off to extract the shims but took the springs out and found the smaller of the two had snapped and was getting wedged in the bigger spring, and that was my problem i think, it must have been intermitantly jamming in the bigger spring effectivly packing it out, a new spring from a spare reg has sorted the issue now, well i hope so anyway because i jumped in the car at 4 this moring to come up to Farnborough and its been fine on the short run up here
Also no more rocking from side to side, dont ask me how but it isnt, i also need new spheres on the rear now as the back end feels rather firm compared to the front with its new hydractive sphere anyway
D