I think as long as it has dried out completely, you can miss out the 'burnishing' step.

If it is not completely dry then it may cause some dieselling, and even with it dry you may get some combustion of stray graphite particles.

The burnishing thing is on the principle that the molybdenum molecules bind tightly to any clean steel (thats why a degrease and very good clean is essential) so burnishing is just removing the excess.

As someone else pointed out, the piston can do this just as well.