I got some SHB45EX 3 weeks ago, playing with them today and the sheet on top of the sole (mine is black) has come unstuck from the heel. I put some proper shoe spray in so they don't smell, does that contribute? Should this happen? Are they replicable? Is it my fault or a factory error. Please note, I have been playing for 2 years, so im not a beginner but a have a strong understanding of the game and I currently play once a week?