hi Sniperx welcome to the world of home building and rebreather world!
i have a few friends that dive the IDA71
there a few things to look out for if your converting it to ccr but im shore you'll find them in the arcives if not please give me a shout
i've never dived the 71.. but my very first Rebreather was going to be the 72 until dave sutton told me not to! but after having my hands on one i can tell you it's a beast of an Rebreather and many could learn from it.
kindest regards john routley
www.narkedat90.co.uk