No1Mk3 SMLE full restoration - from scratch

[Vigilant]

Just thought I would give you guys an update,

Whole rifle is now rust free.
Putting the final couple of coats of linseed oil with gum turps and Alkanet root mixed in.

Last stage is to seal the metal (will probably be using Cerakote), only issue is I cant free the barrel from the receiver. I would assume this is a must when getting it properly sealed?

The other is, there is a screw holding in the sear that I cant get un-done. Everything around it is rust free and there doesn't appear to be any weakness or degradation, it just wont budge, this particular screw is quite soft so is prone to stripping, ill take it to my local gun smith and see what he says - can get it out, but I would also assume this must come apart if sealing? I'll provide pics once i get my camera today / tomorrow.