String Trimmers

I received my PP125 a week ago.  After using it long enough to use up the factory-loaded line, I attempted to follow the instructions to reload it.

The spool housing/case (it's called different things in the picture and text of Poulan publications) was difficult to remove. Upon finally getting it off I saw that one of the top ridges or flanges was either molded incorrectly or had been forced together assembly, causing the material to deform and make for an excessively tight fit.  

I rewound the line per the instructions but the housing does not seat fully because of the deformed flange. 

 I am attaching a close-up of the messed up top "flange" (?)  at least as good as I could do with a phone.

I took the PP125 to the Poulan Pro service locatlon the website locator found nearest to 75472.  The service shop advised:

• the damage was due to wear.  I stressed this wear was evident the first time I opened the spool housing to reload the line. 
• the housing is not available as a separate part
• the solution is for me to buy the complete {head} for my new trimmer, approx $22.

I do like the trimmer and it works well.   I believe it would be reasonable for Poulan to warranty this part, shipping a replacement to me.  I would be happy to pack the defective housing up and return it for your inspection if you provide a UPS call tag for it.

Due to the prior interaction with the nearest Poulan service center I suspect they will not be a part of the solution. 

I  had already filled out the warranty information.  The  Confirmation Number is 140518-000257 if you can pull up my info that way.  If not I will provide my contact info, invoice, serial, etc as needed. 

{Edited to add complete "head" I left out}