I am looking to upgrade my stock rudders, they are pretty banged up and I am tired of rebuilding them every Spring!! Will the EPO rudders work on the Miracle 20? They are less expensive than new stock hobie 20 rudders....I don;t know what they are referring the regarding the EZ loc system either???

http://www.murrays.com/mm5/merchant.mvc?Screen=PROD&Product_Code=50-20490020&Category_Code=C-RC&Store_Code=MS

I am also looking at replacing the main sheet blocks, they are are pretty worn out....any particular ratio recommended? 8, 9, 10 to 1?

thank and happy thanksgiving