To my knowledge this is not a Cirrus specific problem, but it appeared first in the Cirrus TN fleet. It has been encountered in T and NA Cirrus, Corvallis, T310, Bonanzas, and Barons. But obviously all with the RHB32S fine wire plug (in Conti engines). From what i read it also is an issue in a Lyco engined PA-46-350P. The Champion letter was a retour to a SB from Tornado Alley Turbo, but Cirrus...