I just got my new rocco shock for my 2005 iron horse 7.3. I know the shock size for the current bikes is 8.75 x 2.75. I am pretty sure that the 05's had the same size. However, the 5th element i just pulled off measures at 9.0 x 2.75. did i order the wrong size shock, or was the old shock different than what iron horse thought?