WOW...this picture helped me even more than I thought:

The angle meter also has a cm. scale on the bottom, from this I now know the exact position where the support of the CRT needs to be, 7.7 cm.
Of course, there is still a possibility that the bezel may be a bit higher or lower, but I can't imagine it can be much difference....I'm going to take the chance.
I'm ordering the cheap bezels, I'll be ordering 3, since shipping costs are so high anyway if I buy one it makes sense to have 1 or 2 spares.