I've replaced the seals on my stock p125x, and while performing a leakdown test afterwards i was surprised to find a leak on the flywheel side seal However, there is some lateral movement in the crank. when it is pushed to one side there is a leak but pushed to the other it holds pressure well.
Should there be any lateral movement in the crank? if so, how much is there a tolerance? does this indicate wear in the crank web? any ideas?
does the clutch fixing bolt draw it towards the clutch side.
only thing different i have done this time is used a cork case gasket which is slightly thicker than standard.