Temperature Drops after Print Starts - AO-101 & AO-100 - LulzBot

Hey Guys, So I had to put in new thermistor recently, did some other structural changes (60mm height increase) and wired in a fan which isn’t currently connected. Yet now I am getting this issue with my hotend where once the print start the temperature drops even though it looks like the extruder is still rocking it. I ran PID autotune, stored the values, brought the bed and then the hotend up too 230C using Repetier. Then I dropped in the GCODE. You can see down below the temperature curve. T

I've got like an hour and a bit left of my print. Why did this happen? : r/FixMyPrint

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