I picked up a G-2900 with a strap missing (spring bar pulled out) as a repair project. I noticed that where the spring bar pulled out, it scored the resin distinctly.
To make sure I ordered the right replacement springbar, I removed the other side of the strap. This was probably a mistake. In the process, I damaged the other side, a bit worse even than the original damage. Getting it back in was easier than getting it out, but only marginally, and I probably did a little more damage to be honest. The strap still seems to hold firmly, but I'd rather be able to do this with some confidence and not harm the watch.
One trick I found from Jays' and Kays' youtube channel is to hang the springbar out of the strap to help with putting the first end into place cleanly, and that did go well. For the other end of the spring bar, I'm kind of at a loss, and I'd appreciate any tips. I'm using a cheapo spring bar tool from one of the bundles of watch tools on Amazon.
(Side question: what's the right term for the part that the spring bars click into? Is it what PacParts calls the "case center"?)