Using an alternate cable...

On occasion,I have misplaced the provided USB to MINI-USB cable provided with my Sansa Clip.On such occasions,I have used one of many generic substitutes of the same thing I have lying about.In all cases,I’ve found the MINI-USB end of these replacement cables to be a much tighter fit into my Sansa Clip.Though requiring a good deal of pressure,they do seat in the Clip and seem to do the job.Has anyone had prolonged experience with using cords with tighter fitting plugs?Is the Clip designed specifically for a looser fitting.Might this prematurely wear out or damage the Clips USB MINI port?