Can you please be abit more specific?
Are you applying full reverse thrust and applying the breaks as soon as you touch down? Myself personally I only apply around 80 percent reverse thrust, depending on the runway length, and I don't apply the breaks until I'm around 50/60 knots IAS. To make my stops more realistic.
Also check your weight settings if your quite light, you will stop quite quick.
Try any of the above and see if it changes anything.