Hi Hero8888,
The 'swings' in your Verbal Scaled Scores are likely due to some combination of the following:
1) "Narrowing the answers down to 2 choices" and then "guessing." You admit that this happens about 1/3 of the time.
2) There's a potential issue with seeing 'repeat' questions on your CATs (since you've taken some of the Official CATs more than once, you likely saw some questions that you had already answered). Unfortunately, seeing even a few 'repeat' questions can 'throw off' the Scoring Algorithm and impact your pacing, energy levels, fatigue, etc.
3) Various factors involving how you took your CATs - the location, time of day, whether you skipped sections or not, how strict you were about making each CAT 'match up' with the variables you faced on Test Day, etc.
The area that we can most directly impact right now - and is almost certainly necessary - is your Verbal training. The ability to define the correct answer to a GMAT question - even when the aspects of Test Day are not 'ideal' - is the key to earning the type of Score that you're after. So far, your studies have not gotten you to that skill level. Depending on how flexible a thinker you are (meaning your ability to change how you 'see' - and respond to - GMAT questions), you could potentially 'fix' all of those issues and retest in under a month. Of course, if you're "stuck" in your ways, then it would take longer.
1) From your messages, it does not sound like you have scheduled your next Official Test Date yet. Is that still the case?
2) Going forward, how many hours do you think you can consistently study each week?
GMAT assassins aren't born, they're made,
Rich