Ouch, that's gotta hurt if that was the cause of your original toroid grunting problem too.
Of course the $64,000 question is ... how do we know which ones are okay ... do we need to spring for the genuine ones? Maybe Poida can link to his source perhaps.
That's very helpful thanks Mike. I do recall when I got a quote perhaps 2.5 years ago, that while their website says max core height is 70mm ... the guy told me they can do up to 100mm.
Looks like they can go to 105mm now. Very useful info. Thank you.