I am looking into a 3/1 ARM backed by the CMT index. The margin is 2% with a 5% cap on the life of the loan. Starting interest rate is 3.75. I was just wondering if this is a good deal or not and if refinancing is a good idea if you are only getting an interest rate about 1 point lower than the current one. Currently my interest rate is 6 1/8. Thanks [Jacksonville FL]