Yes, the Maddman spring kit will help to lighten the pump stroke as the kit includes springs that are softer than the stock springs so you will have less resistance on your pump stroke. I've used it and it worked well, not as well as buying full on CCM internals though.
You can also look into the SLPS (super light pump stroke) spring kit sold by Maggot. I haven't used it, but other people have posted saying it works well and your pump stroke will be noticeably lighter.
Using the correct spring set up will help with consistency, but you will also need to sweetspot your regulator too as that will affect consistency the most. If you do not know how to do that, there should be information in one of the stickies that will explain how to do it.