Sounds like you could do with swapping out your membrane pad for a new one, if you have one.
If you do not have one and want to eliminate the pad, do the following:
Disconnect your membrane pad off the three prongs on your board and then get an allen key and bridge the prongs with it. Top and middle prong together turn the gun on and then middle and bottom prong together turns eyes on and off.........or the other way around, its been awhile since I had my hands on DM5.