I have 2 808's and a PT all from V4L and they are working grate but the problem I a having is i notice now after 3 weeks that the manual buttons on them are getting harder to push to get a connection? I was looking at bats on nhaler's site and I noticed on the 808 they say there is a new and different button on them. Any one know about these different buttons that are on the 808's and are these new buttons on a good bat because i am happy with the V4L just not with the button getting harder to push. any thoughts on this guys?