Chaps, over on another forum I visit, someone's posted the comment:
"Balancer shafts have caused problems on all sorts of engines over the years including Ford V4, Saab 2.3. "
I don't recall this being much of an issue on STT nor the old forum. Is this so?
TBH there's a lot of dross to sift through on this other forum but there is some useful stuff. Around 5%.
(I've posted on this section because it seems to get the most knowledgeable/active contributors - nothing against the rest of STT!)