CHT - One bad?

[Whocares]

All newly installed and find #1 CHT reads -9 no matter what we do. Wires are good, pins are good, switched probes and it's good......
Tech says send it in but it is an enormous headache to remove again and I have first engine start after overhaul this weekend. Anybody else ever see this issue?

 

[dynonsupport]

SkyView or D series?

Rotax or other engine?

 

[Whocares]

Sorry, Lycoming and D10 EMS. Talked to tech and they want me o send it in.  Just started a newly overhauled engine and need it for the breakin. 
Sorry for the monster picure!