@Click-Vacation-Home0.
Are you saying that when you edit the Management fee that 13.5% still appears in the Standard fee and charges list? I just made updates to the Management fee on one of my listings, and took snips of each step. Did you do the following?:
Choose the listing's Pricing tab:
Click the Edit button for Standard fees and charges
Enter "0" for Management fee value.
Click the Save button at the bottom of the edit fees page.
On the Pricing tab, the Management Fee appeared in the list of fees with the comment "None".