I think it was because:My guess is that Michelle only chose to perform the triple loop twice in her FS in the 1997-1998 season because she was competing against Tara Lipinski, who had the triple loop/triple loop combination.
- Her foot fracture meant that the 3T really hurt that season, hence why she took out the 3-3 and left the 3T 'til really late in the program
- I agree with tommyk75 that her loop wasn't bad in those years. It was only later, when her hips started bothering her, that her loop started looking low and eeked out.