On mine it is 99% of the time between cylinders, causing the instant loss of two cylinders. I was doing OK at 12.5:1, having to change gaskets every 100 runs or so, or about twice a year. Now at 13:1 - 8 passes. However my carbs were lean and by short-shifting I may have unintentionally lugged the motor down, exacerbating the gasket problem. Shaking down a new combo is always a trade off. You try to protect one part and end up abusing another. I will sweeten up the tune-up combo this weekend and try the FelPro 1024 one last time.
Larry, have you tried using Loctite brand Gasket Eliminator smeared sparingly around all the gasket openings?
