If it is the HWH system, they will tell you to hold the retract button down for 3 -4 seconds after the slide is retracted. If you do that and still have slide creep, you may need to replace the extend solenoid. A weak extend solenoid will allow the slide to creep out.
2007 Country Coach Allure Siskiyou Summit, sold/traded Nov. 2018.
2019 Grand Designs 384GK-R 5th wheel. Glen Allen, VA