Joined: Aug 2008
Posts: 13,140
Likes: 2,162
From: Ann Arbor, MI
Bikes: 15 Kinesis Racelight 4S, 76 Motebecane Gran Jubilée, 17 Dedacciai Gladiatore2, 12 Breezer Venturi, 09 Dahon Mariner, 12 Mercier Nano, 95 DeKerf Team SL, 19 Tern Rally, 21 Breezer Doppler Cafe+, 19 T-Lab X3, 91 Serotta CII, 23 3T Strada
Okay, well, good luck.
For the record, in case it's helpful to you or someone else, although I don't know what you mean by "shoulder angle" nor understand why 90º of it is ideal, tightness between the shoulder blades suggests more of a too-wide grip stance, as from handlebars that are too wide.
Do let us know how your a la carte (?) fitting goes.