I have about 6,600+ hours with LSE equipped planes. 1 coil intermittent coil failure above FL200, one bad coil spade connector/spade interface, and one intermittent RG58 (prior to Klaus being urged to supply RG400) failure due to long term thermal degradation with migration of center conductor towards the ground foil/braid.
I'd check the RG 400 lead and the male/female spades *very* carefully with a DVOM, actively wiggling the lead.
'83 LongEZ - N888EZ 3,314 hours
'89 LimoEZ - N26EZ 686 hours (sold)
A couple of Glasairs and a Lancair 320...
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