I just trimmed mine. Wasn't a problem. I’m just thinking that the ones I got are just strange. i need to order a few from watches77 on dh to see the better reps.
Here’s the contents of the three different moonswatch reps I’ve received so far.
The bigger mars one is metal cased straight garbage with a 371/370 battery, the first two I got a long time ago.
Then the Neptune is the first gen plastic case one has an lr920 battery.
The earth is from the latest batch that I used to make my metal mars and the stem was too long, has an lr920 battery and also says pe50 on the movement but looks much cheaper.
All three seem to be Pe50 movements but vastly different quality.
Earth and Venus models have the same stem. Big mars has a longer stem.
Last pic is the full length stem next to the unmodified one.