[PTSanchez]

We like ld threads (w/ ld rifles).

Any idea who made the stock? I don't recognize the WaA mark and haven't been able to find any info ...... also wasn't aware that they marked the stocks in that location ....

Yes (as runner has noted above), so far this lumber appears to be native Steyr - as it has their telltale shorter/shallower bolt handle relief.
Check forward of that wrist s/n for a WaA, & also look closely here (circled in red, where I can faintly see 2 eagle cartouches). Can you read the WaA#s below these 2 eagles?:

 

[PTSanchez]

Thanks for trying.
They can sometimes be tough to pick-up without some soft, diffused lighting. I've occasionally spent over an hour doing this, & found that heavily-overcasted days yield the best natural light for viewing. Outdoors, & any magnifing lens helps.
That, or a soft artist's pencil "tracing" using tissue paper might be worth a try.

Regarding the s/n: same here, I'm seeing 290x on the keel. The last character is smeared, but hoping it's a 2.

"3.45.41" would be the laminated blank's cure date: 3rd day, 45th week of 1941.

Could you please verify if there's an "eagle 623" & 2-digit s/n on the front face of your bayonet lug? If original, it may sport an "02" s/n there.

 

[PTSanchez]

The E/37 (seen on the mismatched s/n 84 bolt release) pegs to Sauer - so it's all starting to spell "Mixmaster". Still like the looks of it.
To my eye, it lacks all of the classic Balkan rework footprints & is looking simply like a stateside parts rifle: for starters, the stock is too pristine (but is lightly sanded, some of the stock pics do make it look like shellac may be present, & others don't - but def none of them show hand-carved graffiti, or peened markings), & very much of the original bluing on the iron is intact from stem to stern.
Sling is a common/current asian repop, & the front sight hood may be repop as well - just by noting its darker color.
Doubt if the cure date will help w/ a production date much, but some of the other fine gents whom haunt this great site may have input re duration of blank cure .... at minimum, we could safely figure several months.
However, I will offer & state this butt's date lettering is applied at 90* off from normal - & is only the 2nd such example that I've ever seen like this.

Bottom line is that you have an honest, very interesting keeper here. The flaws are minimal, & the best part is that Bubba has left his grubby mitts off'n it. In my book, this specimen beats the heck outta some RC - so live with it, mate.

p.s: just for the helluvitt, please advise - what's the WaA upon the s/n 2777 floorplate?