Thanks for all the responses, My bike has plain Auriga. The OEM version model 290/291

I was totally amazed to get an email back from Tektro. The lady told me she has been trying to get her guys to make
model specific video for these brakes. Just hasnt happened yet. She referred me to the following you tube video, It seems about right
Dave

https://www.youtube.com/watch?v=xWkZ5ePn2hk