Looking for valve extenders that actually fit on my tires. I got a pair of extenders from planet-x when I ordered a wheel set, but the threads don’t match the valve core on my tires (Vittoria Triathlon Evo CS 290tpi). The valve core is removable, so I’m looking for extenders that work with that. The only thing that comes up when searching for vittoria tubular extenders are those red, ridiculously expensive, Vittoria-branded extenders but they don’t fit these tires I don’t think.