Ping, you are in "TC-SS" mode where it does skip over the 105 TCR setting. That's the Solo's default SS316L setting. It needs to be changed to "TC-TCR" mode for you to change the TCR.
To get the Solo from TC-SS to TC-TCR mode press the Fire button 3x then press the +/- button to scroll through the different modes. When it displays TC-TCR mode press the Fire button again until the cursor lands on "TCR" (3x). Then press either +/- to increase/decrease the TCR setting to what you want.
After you made your adjustments you can either hold the Fire button for 1 second and it will save and exit the settings. Or just leave it and the Solo will save and exit the settings mode after 5 seconds.
Easy.