A Pentax Espio 135M Multi AF Auto Focus 35mm...

Question

Hello, The lens protection device of a camera I recently purchased does not open fully. It only opens about 1/2-way. The 4 little flaps are opened by 2 pins and they don't seem to be moving all the way across when the camera is turned on. Would I have to open it further to find what the problem is? If so, do you have an instruction procedure for this?Thank You,Kene