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UPO stem problem


danza1812

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I have 2 franken UPO's

First one I did the crown and tube swap with no problem. Stem fits into crown at exact same length as before and movement worked fine.

On my second project, I snapped the stem, s got a replacement stem for the eta 2824. However then gen stems must be ever so slightly shorther than the jap eta'sand it doesnt engage the movement correctly.

Anyone got a spare stem from a UPO? Or know where i can get one of these ever so slighly longer stems?

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I've been looking for the longer stems for a few months now. It's great on rep tube/crown but when you put the gens in, it's just too long. What I've managed on my UPO is to file 0.5mm off the end of tube and it seems to work. Time will tell, and it's still a quite tight fit.

What others do is only put the stem in the crown part-way and loctite it.

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