Did you work with Barrons 2400 and other books like that (the ones which really focus on difficult questions) ? Also time yourself like crazy. If you have a 25 min sections, do it in 20 min including review, ect.
No body "sucks" at reading. Your comprehension may be a little off but with practice it WILL increase. The SAT doesn't test extreme comprehension skills, so preparing isn't as bad as people make it out to be.