Questions on Tender Spring Swap

What is the rear spring rate on the 2 seater rear springs? When swapping the front spring to the rear, is this essentially going to soften the rear suspension, Or does it stiffen it up.

Seems as if now it is too stiff in the rear and tends to want to kick up on me.

Was looking for a simple and easy way to stiffen up the front, then soften the rear suspension. Seems like the tender swap would fit the bill. never understood why the small spring in the rear is completely collapsed as that seems very ineffective.

Any tips or tricks are welcome! Would like to improve the suspension with out breaking the bank.