Different guitars are of course, different but, my Epiphone Casino according to the book is supposed to be ...High e 1.6mm and the Low E at 2.4mm. My Yamaha AES is 1.9mm-2.4mm. I have them both set with the High e at 1.9mm and the Low E at 2.6mm...That being said 7-8mm is waaaay to high.

I googled Squire Strat action height and it says 4/64" for all...that would be about 1.6mm.