The 14THs isn't very far out I don't think from what a processor/miner would be expected to run from without overclocking using 5x3.5THs devices. If you have a manual with them, you might want to look at instructions on overclocking them if you want to get them closer to the 17.5 limit but you may damage your miners by doing that for extended periods of time.
You can't post images as your a "Newbie" member, what you can do is post a link to them in a reply to this post and I'll add them to this post as a quote.
I think you for your input, after figure out what plus or mins 10% your right if I am getting close 15th I am actually getting what I am suppose to be without blowing them up.. nm I totally forgot about that.. so if want to do more I would just have to add more.. Joy lol... Thanks a bunch.