Client made excess Roth contributions over several years.  I'm amending those years. Can the built up excess be withdrawn by the July 15, 2020 due date of the 2019 return to avoid the 6% extra tax for 2019?  I can't seem to figure how to show a withdrawal of  the built up excess on the IRA forms or on the form 5329.  Thank you in advance for any input you provide.