Good points by all, only other thing I could think of is using sealer on the gaskets or the new end seals/ clam shell
Not a bad time for new fuel lines to.
about sealers -only a few are rated for 2 stroke cases because of the fuel oil mix. The ones I have heard good things about are 3 bond 1127, 1215 Yamabond and Honda bond HT and what Stihl recommends Dirko HT
i have used the Dirko HT and it has held up well
I would also second doing a vacuum/pressure test after reassembly. not to much pressure 5-7lb should be plenty.
Keep us posted on how it goes, definitely Nice to have a back up saw. :thumbsup: