why do all your posts come through twice? every single post you make shows withdrawn, followed by your post.
Anyway, maybe they do something prior to shipping that I’m not aware of that ‘breaks them in’. Honestly, I think the breaking in process is just not a big deal for 10mm belts regardless.
My pioneer belt felt better after a few sessions than when I first received it. So even if there is some breaking in done before you get it, you’ll still need to get some use out of it before it’s 100% ready for competition. You mentioned needing the belt asap, are you competing in something soon?