Gasket set,,about $30 bucks,,
HD service book,,$60
Take the tank off,,
Only real thing to watch out for Is Lifting the rockers up.
They must come UP and go back DOWN super evenly so you dont stress the box,,It will crack,,
Take them up and down evenly by turning each of the 4 bolts 1/4 turn at a time,,,
keep to a pattern.
If used properly,, as In a thin coating on all surfaces
and a small bead In the gasket channels to the out side edge...
( NOTE: the ammount In the channel should not come squishing out
when the Gasket Is Laid In)....
Seal surfaces,,scratch easy, they must be super clean,,
Figger It out,,,,,,,,
The rocker cover bolts have a small seal,,get those also,,,
Save $400 bucks,,,,,,,,
We are Legion