asking dealer # of decks in shoe?

Hi,

For the life of me, I cannot tell the difference between a 6 deck shoe and an 8 deck shoe. No matter how much experience I get (have been playing for about 3 yrs now) or practice I do, this seems to be one hurdle I cannot climb over. My question is, would it draw too much suspicion to myself if I asked the dealer how many decks were in the shoe before I played? Thanks for any help!