G'day all, bit confused as to what egt probe to get for my madman gauge. There are a few cheap ones on ebay but not sure they'll work? Can anyone recommend a probe?

The unit is a bit old and has been giving erratic egt readings at times tripping the high temp alarm even when coasting down a hill... I thought I'd pull the probe out for a look thinking it's the problem and of course stuffed it, so now need a new probe whether it was buggered or not!

Cheers, Andrew.