Changing the numbers on the code to give sizes larger than offered.
Etsy's max was 5 rows or columns -- I changed to code to give me 6.
just edit the part that says 'thumbnail', n1, n2 or 'gallery', n1, n2
so that the n1 is the rows you want, and n2 is the columns you want.
I made 6 rows and siz columns.