Quote Originally Posted by onlyinnewfoundland View Post
Any idea if 357 series is affected? They use the same ITB.
this is related to FM1-a153-020 and below i think. So any model that uses that number will likely have the same issue. I havent had FM1-A153-030 in any 257s long enough to know if its defective yet but i did replace the ITB in a 257 recently with the updated part number because this issue had occurred.

Its safe to assume most of the 257/357s already in the field may have a faulty ITB