Regulating an NH35A -DU and DD difference of hundreds of seconds

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Ok, so I'm little more than a monkey that has watched some youtube videos when it comes to doing anything to the inside of a watch with the caseback off. That being said I recently purchased a used RZE titanium Resolute for a decent price off of Reddit.

When the watch arrived it was off by about 7 minutes a day - running super, super slow. I checked with the phones magnetometer and it didn't seem to be magnetized. I figured with the low cost of an NH35A replacement movement I didn't have too much too lose by trying to gently push the regulator levers myself and use one of the phone app watch timers to see what I managed to do. I brought it from -400s a day with a beat error of 1+ ms down to -4+6 (not particularly stable so far) with .5ms beat error. That is until I flip the watch over. In DU I can't get it to stabilize at anything - 600S a day slow, beat error in the teens, etc.

I realize that in order to actually know what is going on I'd probably need a better setup of a timegrapher. I'm trying to decide if it is worth that, or just to try swapping the movement given the low cost of an NH35A in the first place.

I realize there could be any number of things wrong with this that I can't identify - it was just disappointing to get it to seem like it was running ok, and then realize that when I flipped it over it was anything but.
 
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It doesn’t need to be regulated. It needs servicing. Probably cheaper to replace the movement rather than to have it serviced. Can you return it?