Jim, strings are like voodoo to me. Even after all these years I know what I like but am still not sure why they work the way they do.
I'm using the Smith Burners on my Zon, but so far the best sound I've gotten on my old Tobiases is Martin Darco Nickel roundwounds! Kind of funny because I keep reading about how crappy they sound
I would think going with a bigger gauge of the same string might tighten things up but...
Last week I put the lighter gauge .128 - .40 Lakland strings on my 55-94. Not only did they give me excellent "push back" for fingerstyle, they're a dream for slap. I expected them to be at least slightly floppier than the .128-45's (which aren't floppy at all) but they sound and feel great. They're extra long scale so I don't think they'd work on your Tobias.
Keep in mind though, I play pretty light but hard, if that makes sense
Nice to see ya around, Jim.