Until recently I had Britax Kidfix Pro seats installed in my car as my car was the “family car” and my husband had Joie Elevates in his. He’s now got a new “family car” so we’ve swapped seats. In my car the Elevates seem to almost cover the belt buckle so will be hard to use and maybe not even safe??? Does anyone have any advice? I naively assumed HBB were compatible with most cars. Do I need new seats?