I had trouble with one end link. Its fits so flush with the lugs that if you try to put one end of the spring bar in then the other, the fact that you have the bracelet angled slightly wouldn’t allow the endlink to fit between the lugs. You need to compress both ends of the springbar then move the endlink in. I had to pull out my tweezer springbar tool whoch doesnt work all that well and I refuse to spend a few hundred dollars on a Bergeon springbar tool for that. Eventually I got it to fit.
I rocked the OEM bracelet for the longest time and I like it but after a few years the weight started to bother me. The mesh is so much nicer. Get it. You won’t regret it. I got mine from Topper Jeweler in Burlingame California. It cost close to $500. Pricey but worth it and still so much cheaper than the Omega mesh.