Don't sweat it !! A Marlin 336 is relatively simple to break down into its "major" assembly groups for cleaning. So is the Savage. Got to learn sooner or later anyway. There are also some nice sebsites that go through break-in and cleaning techniques. And I have found almost every instruction needed to properly break down and reassemble every firearm I have ever attempted. Most can be found on-line too. Just take your time breaking down the rifles, and make notes if needed.

I "Googled" Marlin 336 cleaning and found several well done "You Tube" demonstrations on cleaning the Marlin 336.