FPDF ?

For those of you with FPDF experience. I've just begun using it and have figured out how it works I think. I am still having trouble with the bottom of the page tho. Seems that if I get too close to the bottom margin and my data line exceeds the amount of available space, my MultiCell elements print some of their contents and then my Footer gets printed and then I go to a new page where some small amount of the remaining data for that line gets printed and then a new page is output and repeat. This can go on for 3-4 pages before things work out and my report continues until it gets a full page again and then it all happens again. I know it sounds complicated, but I'm hoping someone else has experienced this kind of learning curve and can give me a clue as to what I'm doing wrong, or at least what's happening. Even better would be an algorithm for detecting how much space I have left so I can avoid these split lines and perhaps solve my entire problem.