Recently I took the front of my Sony CCD-TR620E Handycam in order to clean some gunk behind the crevices including behind the mode selector switch. After cleaning everything and putting it back together I noticed that the switch moved extremely smoothly now in comparison to before. Whenever I put it into player mode it stays in said mode no problem. However, whenever I put it into camera mode it has troubles staying in it. Sometimes it will instantly switch back to off mode once I release the switch and other times it will stay but any medium shock or fast upward movement will switch it back to off mode. I tried searching for a service manual in case I put it back together wrong but can't seem to find any. Anyone know what could be causing this problem?