Darn gasket 720LP

[Ben.So.Tex.]

I have had the head and manifold resurface when I overhaul the tractor 5 years ago. Put a new muffler on yesterday and manifold gasket is leaking.
Any thing that I can do to make the gasket last alittle longer. I may only put about 50hrs a year on this tractor?

 

[MrJDMan80]

check the lenth of your manifold bolts. they may be to long and are bottoming out, not putting the correct crush on the gasket.
Tim