It's supposed to be more resistant.
When you press a normally open key closed, it has the force of your finger to hold it closed. A normally closed pad only has the force of the spring to keep it closed.
If such springs are too weak, the pad will be blown open when you play - this is a common cause of problems.
However, there's a minimum force required and anything above that is just adding weight to the action.
If you feel confident enough you can adjust the spring yourself, otherwise take it to a repairer who will be able to slacken off the spring for you.
Regards,
When you press a normally open key closed, it has the force of your finger to hold it closed. A normally closed pad only has the force of the spring to keep it closed.
If such springs are too weak, the pad will be blown open when you play - this is a common cause of problems.
However, there's a minimum force required and anything above that is just adding weight to the action.
If you feel confident enough you can adjust the spring yourself, otherwise take it to a repairer who will be able to slacken off the spring for you.
Regards,