Remove buttons next to grip in TTMSFNCScrollBar


I am testing out the trial version of TTMSFMSScrollBar for use with TMS Web Core. I can't post to the FNC UI forum so I have to do it here. 

The TTMSFNCScrollBar has two sizing buttons next to the grip button. Is there a way to remove/disable those buttons in order to get a scroll bar with just the grip? See screen image below.

https://imgur.com/LluGeXy

Set Appearance.FixedThumb = true

Thanks very much, I missed that setting.