A-Ganger,
I hope you are monitoring ReinForce Alert main thread at Red Rogers forum. Special fix for P3 TAKKO was issued upon your bug notification (notice post #2671 with your name mentioned) and subsequently that fix was included in the latest RA 1.43
http://www.redrodgers.com/forums/sho...554#post144554
My point is, that indeed there appears to be some issues with win10 and P3, which you have diligently noticed in your extensive testing. Perhaps, its anybody's guess, there might be even other problems as nearly 10 years old simulation is being subjected here not only to evolving and changing OS, but modding as well.
As a bystander rather and only occasional reader of the various DW forums and YouTube DW videos watcher, I greatly appreciate your time and forum input dealing with the problems, or bugs. I hope your testing and posts here would continue in the future and you will not give up on RA mod entirely.