Slides are complex and need to be balanced weight wise to ensure the right amount of weight is on the motors/gearing. One of my camping friends made some changes to the furniture which changed the layout/balance and ended up damaging the slide.
As you did, I would recommend reaching out to Jayco for their thoughts of your plans. Make sure you include the weight differences of the changes you are proposing.
2013 Jayco JayFlight 26RKS
2013 Ford F150 Ecoboost FX4
2003 Coleman Bayside / 2011 Jayco Jayfeather X20E -- RIP
2012 Tacoma Sport DCSB / 2013 Tundra SR5 - RIP