But a very different problem, at least in my machine: three feet sit in plastic threads -> no problem (except that an old hardly was driving, but different site The fourth sitting but in the metal plate under the engine (here's a thread cut.. And as to the replacement feet the thread does not like the original parts throughout until the rubber is, can the foot 'by' the plate screw and it is loose. The problem can solve it by unscrewing the plate and on the other hand is from behind a mother ,