The small enya's are not made to the same standards as the larger ones. I heard that the 06 has a conrod stamped out of sheet metal!
For proper build quality see PB. Paw look ok too, plus of course all the conversions out there.
http://www.rcuniverse.com/forum/forumid_87/tt.htm
http://www.peterburford.com.au/
http://www.eifflaender.com/spares.htm