If you can do log work, then this is within your "wheelhouse" of skills.

I am "overly cautious" when attempting advice without knowing someone's background or skill sets...I figure falling on the side of "too much" information (and caution) is better than otherwise...

Your father's familiarity with the frame is indeed a loss (sorry for that...) yet I am sure, since coming to this forum, sound guidance can be had for the taking...where you care to or need to apply it...

We're here for anything...

Cheers,

j