i don't have air leak.. On the damaged piston, i have one ring "glued".... As if it had overheate..
On the other hand, for about a century of kilometer, I have like misfires. I do not get to the bottom of 5th and 6th gear, my banshee jerks as if the ignition did not give enough power.
it's incredible i don't understand why this... I drive with unleaded gasoline 98 with 2% octane additive VP Racing