Spiff

okay, so here's my problem..went to costco to change my tires and they did something to my fender to make the clip pop out and now everytime i turn hard right it makes this god awful screeching noise. So..i went to subaru to buy a replacement clip (which by the the way is totally overpriced) and now my problem is that i can't get the damn clip back in. Spent about 2 hours this morning trying different things till finally my fingers hurt so much i had to stop. If i can't find any suggestions of how to put that thing back in I'm gonna drill a hole a zip tie that damn thing . Was hoping to avoid that so if anyone has any idea's please please post a reply. Going back to Costco is out of the question because there is no way for me to prove that it was their fault. Thanks for reading.