What brand is the dome light lens? I don't think I've ever had one that fits the base, even with GM replacements, meaning cheap and nasty copies reissued in GM bags/boxes. Much other repro items are one size kinda suits many but often not accurate for many, but kinda work. And people buy them up big, not knowing, or caring as often better than what they had or were missing. And so they continue to cut corners and churn out rubbish at a premium price with limited classic car market as an excuse.