Hi I am new. I hope sameone can help

We have a transformer 1600Amp with a bulk power factor correction. With a 12*60Kvar steps = 720Kvar
• The systems run with a 0.7 without the caps.
• The systems run with a 0.96 with the caps.
• I have work it out that we need +_ 800Kvar.
To the point.
• Can you change the 12Step controller to a 20Step controller to try to add extra caps?
• Can you add two caps in parallel if the contactor can take the amps (If I do this I do not have to change the controller)?
• Can you add an extra bank off caps in parallel on the bus bar system if you control it by the same controller?
• Is it true if you do a correction of a third of your total load you cannot add a extra capacitor bank in parallel with you existing system.