arrowheadhunter - I was just curious to see what you had learned and how you decided to apply the information to your project rifles.
Most of us here would likely prioritize as follows: (1) Restore the .22 trainer, (2) Get a correct stock assembly for the dou 44 to use as a nice shooter, and (3) Use (sell) the good parts on the byf 42 to partially fund the work on the first two. And most of us would like to see you keep them; but would be glad to purchase them if you decide not to pursue any further course of action. Regards.