I have a Tag Heuer Aquaracer 300M and when I opened it to replace the battery, I found a white plastic movement holder that also covered the battery. I've read the threads on the plastic holder but I had to remove mine to get at the battery. Should the stem be in? Are there any videos or instructions on how to deal with the plastic holder and not damage the watch doing a simple battery replacement? My older Tag was so easy to replace the battery and not a fan of the holder. Holder is off to the side in the pic and you can see the piece that covers the battery.