I took the test on Monday and picked up similar scores (OAR 68, 8/8/8). Like RevnR6, I think that the gouge out there was a big help. The test didn't seem too hard, but only because it was a bunch of stuff I'd already seen. The ARCO book's mech section is VERY similar to the real test in difficulty/style, and their math prep is actually harder (which makes it good practice). I live in Kansas, so some of the nautical questions came out of left field.
RevnR6, wish me luck on getting my FY06 SNA slot and I'll wish you luck on getting yours...