Little advice on getting the oil gallery plug out of the main gallery under the crank, the one below the rotor. These have a small end on them and a lot of people use that to pull them out but TBH it's not the best way as they do get chewed up doing it that way.
I found removing the plug from under the points and then using a wooden piece of dowel to drive the other end out was far better. A 3ft piece of 1/2 dowel (I'll measure it to be certain)seems to work for me, also has the advantage of pushing out any sludge etc that is living in the oil gallery.
Replacement 14mm gallery plugs are available IIRC, not cheap though, 15331-300-000, are around £20 each believe it or not. Some people say don't use an impact driver to get them loose but TBH I've always done it like that and never had one crack or round off because of it.
Screw for the oil guide, yep, same way. If you round it let me know as I have some spare. IIRC it's a JIS 3.
Oh BTW, if you need some oil gallery plugs I have some available somewhere. Both types.