I just purchased an Mamiya RB-SD. Now I'm trying to complete my kit. If you have any excess lens, particularly a KL type or a back (has to be SD), or accessories, I'm interested in hearing from you. I am very particular about lens, so please tell me exactly how the optics are in your response. Plus, please tell me what you have in your mind as far as a payment. Please, no "give me an offer" type deals. I am in Central Florida.