Continued oil temperature sensor problems - D180

[SammyQ2]

My saga of oil temp issues in my all composite Quickie Q-200  is still unresolved. So far I have:
Chased bad grounds, run fat ground wires, etc.
Installed two (2) GRT sensors. They both worked great for about an hour, then each one failed with a dead open.  I delivered one of the bad ones directly to Greg,  the boss of GRT, at Oshkosh, and so far no response from them despite phone calls and e-mails.  On the Canard Aviators news-list there have been multiple reports of the same GRT failure, as well as jittery response from the Dynon sender.

To replace this sensor I have to pull the entire engine, which sucks as bad as it sounds - maybe worse.

Also from the newsgroup, one of the fellows did a calbration check of his Dynon sensor:

The stock Dynon sender, however, was ridiculously inaccurate - reading between 10 deg F HIGH at low temps (156 F when the candy thermometer read 146 F) to 26 deg F HIGH at high temps (256 F when the candy thermometer read 230 F). Really? 26 degrees off? I can live with 230F at the end of a long, hot day climb. But I can't live with 256F.

The implication here is that any belief that I had a high temperature issue when flying with the Dynon sender (99.9% of my flying over the past 4 years) was incorrect, at least to the tune of about 20F - 25F.

My suggestion is for Dynon to develop their own two-wire sensor and put these common and persistent problems to rest.

So, before I pull the engine one more time to replace the sender - What should I use?

Respectfully,

Sam