Ran out of prep tests

I have done 18 prep tests and I guess I did not realize that there were only a limited number available. I only have one left to do and since 7Sage reflects the prep tests that LawHub has I really have none left since the earlier tests I have used most the questions in drilling. Are there other resources that I can access full prep tests? My scores have been extremely volatile ranging from 163 to 155 with the RC sections as the biggest influence. I take the LSAT the 9th of this month and was hoping to try and gain more consistency in my scores.