I recently purchased the Olympus 8080 with PT023 case off of e-bay. I went to Scubatoys this weekend to purchase the YS-90 auto digital strobe with ttl cord. I found that the PT023 had a 5 prong attachment for the ttl cord that is proprietary. In order to use the YS-90 do I have to buy an adapter or is it best to go ahead and get the Ikelite case for a lot more? I noticed that the Olympus flash with underwater case and ttl that fit the PT023 was even more for a short armed strobe. Thanks for your help.