Thank you for chiming in! That is highly disappointing!
@KJ2020 can we at least put something more reliable in there? 2824 perhaps?
I've never tinkered with the EWF Hangzhou 7 series movements bro. They are not top tier movements AFAIK from what I've read. They are inexpensive which itself is not a dealbreaker fault as the DG2813 is even cheaper and I have several that are still going strong 5 years on.
It stands to reason that a 2824 or a 2836 could fit the case - those two ETAs have different stem heights one of which should be compatible with most rep case tube positions. But which one can only be determined by a trial fit. Then there's the issue of dial feet positions. I think it's unlikely this dial would be a true next generation dial with underside rims like most newer rep Rolex dials have. That would actually be a good thing if trying to swap in an ETA.
Hand hole sizes are also an unknown. Those are all different among various movements so I wouldn't expect these to be identical to anything else. Often some crimping and broaching of holes can make hands fit another movement though. Finding Chromalight ETA hands would be difficult. Most aftermarket ETA hands are either Superluminova (green) or a medium blue (not blue-green) if made for 6 digit watches.
It would be an interesting challenge but in all honesty not one I would embrace. That's why I have always avoided these movements. Like a DG2813, if it isn't performing well it makes the most sense to probably just replace it with another new one.