I do have a cheap dmm/dvm and it does measure resistance...just never used the feature before.

I used some fine sandpaper to clean the tip and did get the solder to wet the tip...but it didn't hold the solder for long. My temp gun must max out at around 500 degrees...just says "hi" at a certain point. I decided to turn up the calibration pot abot a quarter turn in an attempt to see if the temp could even go higher than thr 300ish I was getting before. Went to around 450. Turned the pot about another 8th turn and that's when the temp gun maxxed out. Is it possible that I've been that far off on the calibration from day one? Waht temp do most of you guys use to do basic esc/motor wiring?