Remote coil problem

[interceptorMR2]

Hey so this morning I was cleaning up my gear, and when I went to put my remote coil away (32 degrees "heavy duty") I couldn't find the pin that goes inside (the depressor pin or something like that?) the valve. I eventually found it, but, of course, it wasn't in the valve like it was supposed to be. Later the coil worked just fine when I put it back in and connected up to a tank and my mr2, but that still should be a problem... right? The o-ring seems to be fine, there isn't any leaking or anything going on... yet anyways. Do I need to replace anything?