Thermoquad questions

No, you need the washer which is clearly visible behind the circlip in post #27. It is about 1/2" OD, hole fits the link. You can 'make' a washer using thin steel to the shape in post #27. OD is not critical & it does not need to be perfectly round. The purpose of the washer is to stop the circlip getting caught in the slotted arm on the end of the AV shaft.