I have a snap on 130 turbo ,not used it for 5 years ..Anyway thought Id get it out due to impending jobs on my Discovery..However the trigger is in the (on) position ..Took it apart and cleaned it but seem to be missing a return spring??..This set has had hardly any use at all and it worked well when last used..I removed the black plastic on the block and was carefull doing so over a sheet of paper just in case LOL..There is no spring or signs of one being there..If they do have a return spring wheres it gone???? Can they be bought ? thanks in advance