from the easton technical section on forks http://www.eastonbike.com/downloadable_files_unprotected/instal_instr/fork_07-EN.pdf
"The spacer stack below the stem must not exceed 50 mm
(Figure 4).
• A carbon steerer tube must extend 7-8 mm above the top of the stem clamp and have a 10 mm spacer installed between the stem and the top cap (Figure 5)."
"The spacer stack below the stem must not exceed 50 mm
(Figure 4).
• A carbon steerer tube must extend 7-8 mm above the top of the stem clamp and have a 10 mm spacer installed between the stem and the top cap (Figure 5)."