The Cressi sub fins are the best fins on the market but I can't figure out why they're soooo uncomfortable. :headIs there a solution to this problem, like stretching them somehow see...the problem feels like they're too narrow and my feet too bony to have a prolonged use without getting totally destroyed. My friend has them too and says he has the same problem. Is there another fin thats the same quality but more comfortable??????? Please Help!!!