looking to rebuild the flippers on a HOOK , there are two kits offered at pinballife up to 1993 ( listed for hook) and then 1993 on. all the parts look the same other than the earlier assemblies have the spring over the plunger shaft and later have the springs attached on the outside, as well the newer kit comes with new leaf contacts. can I use the later kit? any advantage to the later assembly spring configuration? thanks