One thing i still don't understand is the 3 day thing in TWN. I have a dogi ball on my Kid and can't use it due to level restriction, however i have had it for a week or so and it still hasn't expired!
i have had 5 dogi balls they do not have a time limit in the tw version for how long you can wait to use them. Once you have used it the effect if perm. The lvl requirement i dont understand though because most dogi's are lvl 1 so to me thats a little odd. And i too have had the rank 1 with all 7 dragon balls and i also got another one with only 4 db's in it its really not that dumb besides saves me from having to buy healing pots if i get the rank 5's and the Ap pot is great even if it is only the 10 min one (rank 3) I have even gotten a 1 day ap pot.