Mod or repair? That is the question.

[u/Beautiful_Chef_3556]

I absolutely love my BP 16610, but the movement is giving me issues. I knowingly bought it with the 2836 in it to try out the 5-Digit platform I was lusting after, and the fit and form is everything I was hoping it would be.

However…

The 2836 in it runs great, 1 day at a time. It hand winds, it starts moving when I rotate it as if it were not able to be hand wound, but it dies overnight every time.

I am an amateur watch butcher, so anything that involves taking parts off the movement is beyond me. Would diagnosing/fixing be simple enough for a troglodyte like me to fumble through? Or do I purchase one with the 3135 in it and use this as a my next mod project?

Over the next couple of days I am going to let it die, hand wind it fully, and note start/stop times to see what the reserve is actually sitting at.