Lower Canine Hitting Fixed Retainer - Was Not a Problem Previously! (Photo)

I've had my fixed retainers for 4 years. The top retainer broke a few months ago and has been a pain since. My dentist refitted it, but I felt the composite was too large as my lower canine kept hitting it. They shaved the composite down, but it subsequently broke again. I've had it refitted with very little composite but the canine still hits. My mouth is very close to being shut, and prior to this happening a few months ago I had no problems. Should I just get this canine shaved down