need more info
Is it just the rocker box gaskets, if so change them with james gaskets, and torque them to factory specs. A lot of people overtighten these.
If you have a blown head gasket, you would be hearing hearing compression leaking.
If its the base gaskets, replace them with the multi layer steel gasket, check the piston ring wear, now may be a good time to hone the cylinders, and replace the rings.
When my base gasket was leaking, i did everything above, sent the heads out for a stage 2 port, had them milled to raise compression, installed an EV 27 cam, new lifters, and adjustable pushrods, DTT single fire ignition. My brothers still riding that bike 30 k miles later, with no issues. Everybody loves the sound of that cam.