I don't think you want a frame 2" smaller than the Dawes. Is the saddle position correct for you? How is the standover now? Are you actually on toptube in standover? Try standover and lift the bike to the pelvis how far are the wheels of ground? I would think that you would want about 3/4"- 1 1/4" clearance, I think 1/2" gap would be considered French fit.