Max Post – Duplicate Posts

I’m doing a simple page with multiple tabs. I have my home page set to my gmail calander. I’m using clear sytle sheet. On my other tabs it only display last five posts. Tried changing reading to 20 posts does not work. so on my page creation I added [posts-to-page limit=7 category=”PITCHING”] for example although I want this to be larger. What happens is it displays the last five post and then below that a duplicate of the last five plus the two it shows seven posts.

I just want to increase the max posts for each page/tab to about 20. Newbie to this and I am just working on this as a volunteer project for youth baseball.

Very close to what I want it to do, just want to eliminate the duplication.