the instructions I understand,  just having some difficulty in gettign the piece to slip under the return cable...
 
might be my big paws...  I'll get it in there eventually...  the pice of pipe I purcheased at home depot was only .33 so I wonder if  managed to get the wrong size or somethin?
 
I'll take my caliper to measure at the hardware store next time ( I know it wasn't 3/4)