FK,
I took the canadian dat 3 times for the stupid carving portion and I scored an 11, 7 and 15 and on the PAT scored 14, 16, 16. Just to let you know I am graduating from dental school this may and although I struggled a bit with freshman labs by sophmore year I was doing well above average in lab practicals.
Handskill is all about practice, but if you don't have the brains, there is nothing anyone can do to help you.
Good luck with your career.