Hi, I am a retired engineer but not a SolidWorks user. My daughter works in the Critical Care Burns Unit at Sydney's Concord Hospital. She has been treating many patients with burns to the mouth/throat sustained from the NSW bush fires in Australia earlier this year. These burns tend to make the mouth contract when healing. My daughter has requested my help in designing something better than currently available to help prevent this happening. With the help of a former colleague with access to  SoldiWorks 2015/16, I have designed the device shown in the attachment .JPG file but have experienced some assembly  interference issues. I have the SDLPRT and STL files of the components but no longer have access to my former colleague. Is there someone out there willing to help me get to prototype stage by making the changes shown in the attached Word documents?