guys i want to bring something to your attention. previously, i showed a picture of my adapters i got from eBay. it appeared one wasn't fitting right and was very wobbly (pulling out) and sticking out on the sides. i now have them installed with a 2 piece zulu strap and they indeed fit perfectly. i think this was my error, as i think i put it in upside down. they need to be installed with the metal middle button facing down (to properly lock into the corresponding hole in the watch body). the reason my previous attempt was wobbly and pushing out was because the middle rubber piece on the adapter was attempting to grab into the hole. so instead of clicking in, it was squashed in. for anyone who has a shady fitting adapter, not seating right, flip it over. there indeed is a correct way to install these. i emailed the seller on eBay letting them know it was my mistake, even though they shipped me a replacement. the ones i bought from inkoo888 on eBay indeed fit well and cheaper than all the other ones on eBay.