I don't think anybody's actually answered the question, which was is Vs affected by CG. The answer is yes.. .. .The aerodynamic stall, where flown breaks down completely over the wings is rarely reached by any aeroplane. This is because the "piloting" stall occurrs when, whilst still nibbling the aerodynamic stall, you run out of nose-up control authority. This is a function of CG.. .. .So, with further forward CG, you have less ability to pitch up, less ability to enter the aerodynamically stalled regime - and a higher perceived stalling speed. This pitch limited stall is referred to by a lot of pilots as "mush".. .. .G