Cheers all
It doesnt move around badly from side to side(only on idle), but the compression thing worries me? Its been compression tested and everything was within subaru tolerances.
What are the tell tale signs of low compression (i have lost no power, engine seems smooth? when driving) and no misfire / backfire or oily plugs?
I have been told so many things by 'specialists' i just drive the thing now. Dont know who to believe?