Been doing a 5x5 on all excercises, including deadlifts. I was deadlifting 325x5, but my grip would fail after the fourth rep and I would have to regrip and finish the last rep. I thought it might have been the length of time that I was holding the weight, so I tried 5x3 with deadlifts, and 350x3. But again, my grip failed after the 2nd rep. What are my options? I know many people recommend straps, but I heard that they are not recommended for less than 500lbs. My back can handle the deadlifts no problem, it's just my grip can't. Are straps that effective? What else can I do? Thanks.