Sat Lit Kaplan?

<p>Ok guys, so I'm in a bit of a dilemma here.. I took sat lit in June, got a 730 w/ no prep so now I'm prepping some for it, problem is I get like 680s on Kaplan tests, but ~750 on the Barron's one. Any ideas why this is happening, and does anyone have some previous real tests? Thanks.</p>