I'm just curious, what's wrong with your 1610? I had one of those beasts but I don't know if it's still around or not. I know that I haven't turned it on in at least 25 years! I'm pretty sure that I still have my old 1601L LA in a HP 180 main frame. That was my first LA and I had to fix the 180 a few times and I never had the heart to pitch the thing.