Chad Waterbury, I know you recommend these, so if you could take a look at this thread, I'd appreciate it.
I like to do weighted decline situps for sets of 3-5. I prefer to hold a plate behind my head. Things were going great, but now that I am up to a 35, I am experiencing some lower back pain doing this. I find that my lower back has a tendancy to arch more towards the bottom of the movement as the weight used increases. I do not touch my back to the bench at the bottom. Could I possibly have the incline set too high?