Dennis Potter, Hugh Lomas, David Yale come to mind though I'm sure a number of others will be added to this list. Just be sure they have some grey hair (lots of experience and the wisdom not to go where they shouldn't). Could only be a case of needing a good cleaning and lube. Let them do it though, no time for garage mechanicing. Had a friend send one back to WR with a similar problem and it was over a year returning....and it still doubled.

John McCain is my war hero.