check earlier post re 335 springs and transfer port sizes
same problem with an airsporter spring from protek
i took 3 coils of and collapsed the end it made 7.5 ftlbs then fitted 1cm spacer 14.2 halved that to 5mm and is now 10.8
im waiting for a vortek seal coversion that will give me the choice of standard seal or plastic seal or o ring
i'll post that when i get to it
cheers ian