Soft rear brake on new Radcity 5 Plus.

[wlfarrell]

Anyone else having issues with the rear hydraulic brake on their RadCity 5+?  Mine has been soft since delivery, not really contributing to any stopping power except when standing still.  Have it in a shop now, after Rad agreed to pay to service it, but I'm afraid the real issue is the brake is undersized for the bike's weight, especially with me on it.  I am 6'1" and weigh about 200 lbs.  Never had a problem with rear brakes (mechanical) on my Rad Mission, or on my road bike (Canondale.)