FFlyer,
I don't see any way to adjust the current parts for a lefty. I suggest contacting Griffin and asking about a new 'neck' or whatever they call that part that slopes down. They are basically a specialize machine shop so I presume they have them and you are not the first. They have excellent customer service, so it is definitely worth contacting them.
Thanks Chris. Pretty simple ties, but They were getting absolutely crushed onthe swing. Thanks for the offer of bear, but Im ok. Dont use hair much and The stuff from my lab/ husky mix actually works good. Pretty much identical to AF