I am pretty certain you are severely underspined with 50/75's at 31" and 75lbs. I'd be willing to bet your actually pretty close to flirting with disaster.
I agree with B. Nubbs. I have been trying to ignore these threads, but Oh My! It's time to get this nipped in the bud. KC - I'm sending you a PM with my cell number. Give me a call and we can get you on the right track in just a few minutes over the phone.
Hoyt77 - try and give us as much information about your bow and your arrow as you can. I can not give you any educated advise unless we have all the details like draw weight, draw length, arrow length, spine, brand and model, size and brand of fletching, etc, etc, etc... The more input the more accuracy of responses can be.