Thanks for your fast replay EMPOWER,
Getting down on your questions:
When you took your CATs:
1) Did you take the ENTIRE CAT (including the Essay and IR sections)?
Yes I always took them the same as I would do on the test day
2) Did you take them at home?
I took tests at home, at an apartment of a friend, at my girlfriends, so various places
3) Did you take them at the same time of day as your Official GMAT?
Always took them in the morning, starting between 8:30 and 9:00 am, also my real GMAT was scheduled on 9:00 am
4) Did you ever do ANYTHING during your CATs that you couldn't do on Test Day (pause the CAT, skip sections, take longer breaks, etc.)?
Never paused, never skipped, always tried to be as close as possible to the real conditions
5) Did you ever take a CAT more than once?
As described above only the last gmat prep test with the 660 score was kind of a repetition, as I got 3 verbal questions a second time
Also in general I would like to take it again in approx 4 weeks, as I think I don't have to put that much work into quant just try to keep my level get on top of some specific problems, and mainly concentrate on verbal, but here I am puzzeled how to approach this big mess....