You could just have bought the SCF020 bonds on market at that time for more than 10.5%, no need for extra negotiation. The term may not have been perfect for you but then you can always sell them. Have never got the appeal of debentures.
Anyone else notice the SCF ads with the eyes suggesting they are worth a look for 8% on Stuff.co.nz and other sites? An effective ad as those things go.