I'm 5'4" and ride a Ruby Pro-52, which should have the same geometry as the Comp. The original set up left me with just a bit of lower back pain.

However, after scheduling a true fitting session which resulted in minor modifications just for me ( ie... a shorter stem, different saddle) no pain. Just pure riding pleasure. A spirited little sport machine.

When all is said and done, schedule a full fitting session with a qualified tech; the result is incomparable.