Cert not being sent as part of http request

Hi,

We're using the nrf9160 with ncs 2.7, modem FW 1.3.6

We're trying to send an HTTP request with TLS 1.2.  We have provisioned our device and verified the key,cert with a python script and that is able to hit our endpoint OK. However, when we try to do the same thing from the nrf9160 we are getting a `400 bad request No requried SSL certificate was sent` error


We are saving the key and cert with 

And then sending it with