Thank you JIm Happy Hollydays to you and your family tooHi Martin
I have cleaned the sensor and have replaced the starting unit once in 8 years of use. I now simply use a BBQ long reach Bic to light the pilot. Bic was always there for a backup.
No mirrors . That unmistakable whoosh then turn thermostat on tells me all is fine.
Happy holidays to you and your family .