see:
Please don't require answer votes to be cast before question votes
For each Q Vote before you use your first 30 votes, you get an extra vote. You voted on 8 Questions before hitting 30, so you got a total of 38 votes. Once you've hit 30, the extra votes earned before 30 are fixed (if you're 31+ votes are for Qs you can not earn any more 'extra votes').
