Hi eastcoastjoe,
If you purchase from a normal websites or shops, then no problem! Don’t worry :)
Sorry again about the heat problem, but it's true we didn't get many same feedbacks from other users. The workers in our factory are working really hard and cautious, but you know, made by human’s hand, it's impossible to ensure every unit has the same high quality, I believe no any company can promise 100% units have all same quality either:) But as what we said before, many reasons can cause heat, if it's really something wrong with our light, and this heat problem can influence your grow seriously, we will take this responsibility for sure, don’t forget we give 1 year warranty for our lights. :):)
But I guess you have resolved the heat issue, right?