Decided to start this thread since these problems and suggestions for help are scattered all over the forum.I'll start out with the sticking button deal:..The pushbutton sometimes rubs against the side of the hole that it sticks out of.It can stick on when it rubs.I fixed mine by enlarging the hole with the tiny tip of an Exacto knife.There isn't much room to work but be carefull and patient and it can be done....Jim