I'd be very tempted to scrap the Explorer and replace it with a different trainer. I don't have anything against the Explorer (I've never seen one), but yours seems to be the first one out of the factory on a really bad Monday.
The Tower trainer is 65 bucks and seems to be a decent trainer
http://www2.towerhobbies.com/cgi-bin...?&I=LXCAS2&P=0