Advice for a recalcitrant 29c

[[kby]]

Thanks; that explains a lot.

I did just try GTO .nn in program mode, and that also does work, so digits are getting entered.

I also neglected to mention, with both working (?) ACTs, the Phi1 & 2 clocks seem a bit faster than I recall seeing spoken of elsewhere—about 206 kHz. Could this be an issue? It's not 2x like something I read in one of Katie's posts, but it seems faster; I've usually seen numbers in the 175–185 kHz range in other people's posts.