I installed the new spring but I feel no difference in lever resistance force, the force is the same as it was before. I'm sure I can install the old spring and it will work the same.
By the way, I reused the primary cover gaskets. Those gaskets have maybe 4 or 5 installations on them already ant still no leak. I also reused the shifter seal, it has 2nd installation on it. Manual says to replace all those gaskets, but I decided to take the risk and see if they will work with multiple reusages. I know you guys are afraid to do anything other than manual says, so stay tuned, I will report back to you how they perform when I will have more miles on them.