When I first started using the Kreg jig I didn't know what torque setting to set my drill on to get the screw the tightest without tightening it too much. After I put the screws in at a low setting I took a ratchet with the square Kreg driver and tightened up the screws until I was satisfied that they were as tight as they should be, then I put my drill up another setting and repeated it until I found a setting that tightened the screws the right amount. My first joints were a bit loose to until I found the best setting for my drill. I also found out that I can insert a screw with a ratchet in places where there isn't enough room to get my drill in, and I also use the ratchet to check to make sure all my screws are good and tight.
Thanks for sharing.