I'm sorry to hear that Levi is having peeing problems. Have you tried changing his diet at all? If he is prone to getting crystals then he should be on a prescription food that will help prevent them. My Storm kept becoming blocked so he had to have the PU surgery which now makes him pee like a female. He'll still get crystals unless I feed him a special diet. I'm feeding him and all of my cats Royal Canin Urinary S/O formula in both wet and dry and they all love it. The wet is also supposed to help cats that have idiopathic FLUTD. Here's the link to it Royal Canin Urinary S/O Diet. I sure hope that you'll be able to find a solution for Levi so that you won't have to rehome him. Good luck.