Just wanted to say I got my coil resistance to stop jumping around. For now at least. I put a new coil in again, read as a 1.4 ohms (was aiming for lower.. yea I'll start counting my wraps next time I guess). After wicking and filling the tank, the resistance then jumped to 1.6 ohms. I thought to myself.. wow.. 3 coils.. all jumped up in resistance after wicking and filling. Whats the deal?? I then removed the bottom pin to access the airflow control. Using a 2mm flat screwdriver to adjust the airflow, I noticed that as I was turning the screwdriver, it was also moving the center post (where the hex screw hole is) because the screwdriver is kinda big for that hole. I kept tightening it until the center post stopped wobbling, then used a smaller screwdriver to adjust the airflow back to where I wanted it. So basically the center post had come loose from me adjusting it in the past using the larger screwdriver, but now that I've tightened it, the resistance went back down to 1.4 after I put it back together.
May not work for everyone, but in my case, the center post had loosened up. If you don't have the right tool to tighten it, you can try using the large screwdriver and see if that helps tighten it. I may pick up some replacement parts just in case it acts up again in the future and tightening it doesn't fix it.