This is what I did immediately to my Norc 2007 series M14.....
* swapped out elevation and windage knobs for M1 Garand parts( I'm an iron sights shooter)
* installed a USGI glass stock (JB Weld'ed the FA parts cutouts)
* replaced op rod spring guide for Rauch Tactical, Marstar.ca, or Tartan Tactical (take yer pick)
* replaced chinese flash suppressor with USGI version (bayonet lug addict speaking to you)

* shimmed the gas cylinder assembly while I had knocked the XZhinese flash suppressor off.
* Greased the trigger sear (smooths it right up) and then all bolt lugs, raceways and metal wear ares... Just go and have a look at YOUR M14 for the metal on metal areas. Not hard to spot.
whoops, you asked for 5. I might have exceeded that.... I forgot to include: Buy a 2nd Norc/Poly M14 for these reasons:
* Because we can (not unlike Xhinese law / policy of having only ONE child

* spare parts
* prevent #### from falling off
* spend $ 1000ish give or take and still have more than half of a Springfield M1A
Future tweaks?
* Weld the front band to the gas cylinder
* glass bed the rifle in USGI glass stock
* drop in USGI HR bolt, because I have one here

And I ain't selling it to any of youse!!

* install National Match hooded aperture (I was an NRA High Power Service Class competitor in Sharpshooter Class) but leave knobs at 1 MOA per klik (not the NM spec of 0.5 MOA per klik, lots cheaper that way)
* Buy reloading components and make up a zhitload of practice ammo
* Shoot in the ORA's Service Rifle program with Timk and myself

* pick up fired brass and send me 3 of them to mic/measure your headspace

* Clean rifle and wait for the zombie invasion (along with Will Smith & german shepherd pooch)
Cheers all!
Peace out!
Barney