Hebiki,
I guess that might work ok for you, but I'm pretty sure that my armature would be done after couple packs with that kind of setup.
I downloaded all 1:10 touring and 1:12 carpet setups into my laptop and browsed those a bit. Setups between 27T, 19T and modified seem to have quite linear difference. 27T has the curve at quite top, modified below middle and 19T in between of those two.
If I would modify that 19T setup and adjust it from the main slider a bit downwards, then it should fit for 17x2 in theory? Or should I adjust every setting separately by counting theoretical value for each by using 19T, 27T and modified setups?