What happens when a character has 6 characteristic and 5 skill ranking when talents and other bonus grant the player 2 or more Ability Dice Upgrades?

Obviously the character would roll all 6 Proficiency Dice but would the additional upgrades add addition dice ie first extra upgrade is a boost dice, second is ability dice and third proficiency die or is 6 the maxium amount of proficiency dice the player can roll?

Thanks in advance for and help,

i'm not sure where it is in the book, ( in the begining I believe) but additional up/downgrades first add an aditional characteristic/difficulty die, then that die is up/downgraded. so if you had YYYYYG and received 4 upgrades, it would become YYYYYY for the first upgrade, YYYYYYG for the second, YYYYYYY for the third, and YYYYYYYG for the last.

I have only read about half of the corebook as of yet, but i haven't seen anything to limit a dice pool in regards to up/downgrading a check.

Yeah I read thru the whole Beta and only skimmed over the Core rules so far. I will look in the front and check. Thanks for the input Ten