Edwin, I have had similar situations when putting on new strings. Which doesn't happen as often as I find my self leaving a set GHS Boomers on until they start to need to be re-tuned more often (this is usually prior to breakage).
So, yea, I like them old strings. Before I do the barbecue sauce trick I think I'll actually put on some flats.
Does this mean the Distillate sounds better with aged strings? I'm not so sure. I was listening to some old recordings and heard a VERY strong, Entwistle/ Squire influence in my sound. These days I find myself looking for the Willie Weeks type tone. Not so much a lead bass tone but more of a Bass bass tone. Doesn't mean the bass sounds 'better, but I do like the way it sounds more. ...
I think I might be rambling here. . . Too much bourbon last night. . .