My 54cm Redline 925 with the long tube was always difficult to get to fit correctly. I ran pretty short stems mostly around 80mm and was always playing with bars.

I got a 55cm Rush and run it with a 100mm stem. It's a little short in the top tube but I run it with riser bars and kinda like the upright position with the tight geometry for the city. I ended up getting a road bike for longer rides which has a 56cm top tub which is what fits me correctly. Otherwise I'd probably throw on bullhorns and possibly a 110mm stem for more reach on the Soma.

Attached is the geometry from the Redline 2009 catalog for the 925, don't think it changed year to year: