torsion springs

I just bought a 2013 FX Nytro and was told that the rear suspension on it was a bit stiff because of a previous owner being a bigger lad and replacing the rear torsion springs with heavier models. I was hoping to buy lighter springs but wasn’t sure what to get. I know that there are 3 different...

Looking to upgrade to the HD torsion springs for my skid on my 2011 Apex XTX. What is the weight recommendation for the upgrade? Running mine on H now and have it bottoming out some. I am 220lbs plus gear and tunnel bag. Original springs from new. Looking for thoughts.