iRule - Url rewrite and header replace and pool selection not working

I have a scenario where I need to perform a header replace and url rewrite and select a pool.

I have several sites that I need to select a specific pool and they all have to come through the same

virtual server.

When I select a pool the content returned is not complete. The web page is missing formatting and content.

If I define a default pool that would be used for the specific site the content returned is complete for that site

but still missing content for the other sites not using a default pool.

I have tried a /32 oneconnet profile and that made no difference.

Below is my irule

when HTTP_REQUEST {
   switch -glob [string tolower [HTTP::host]] {
         "mywebsite.test.edu" {
            switch -glob [string tolower [HTTP::uri]] {
             "/mytestsite1" { HTTP::redirect "https://mywebsite.test.edu/mytestsite1/Authentication/Login?" }
             "/mytestsite1/*" {if {[HTTP::host] ne ""} {
                            HTTP::header replace Host "differentname.test.edu"
                            HTTP::uri [string map -nocase {"/mytestsite1/" "/differentname1/"} [HTTP::uri]] }
                            pool mypool1
                            return
                            }
             "/mytestsite2" { HTTP::redirect "https://mywebsite.test.edu/mytestsite2/Authentication/Login?" }
             "/mytestsite2/*" { if {[HTTP::host] ne ""} {
                            HTTP::header replace Host "differentname.test.edu"
                            HTTP::uri [string map -nocase {"/mytestsite2/" "/differentname2/"} [HTTP::uri]] }
                            pool mypool2
                            return
                            }
             "/mytestsite3" { HTTP::redirect "https://mywebsite.test.edu/mytestsite3/Authentication/Login?" }
             "/mytestsite3/*" { if {[HTTP::host] ne ""} {
                            HTTP::header replace Host "differentname.test.edu"
                            HTTP::uri [string map -nocase {"/mytestsite3/" "/differentname3/"} [HTTP::uri]] }
                            pool mypool3
                            return
                            }
                    
        }
      }
    }
 }