Not heard of anything like this in the animal world, but had 3 kids, and heard lots of horror stories about cleaning baby boys, especially after circumcisions - on the off chance it is similar and helps, try using an unscented baby wipe with aloe (or 3) to thoroughly clean (and I mean lift and separate everything you can) the kit's private areas. Do it at least twice daily. Folks here with more bunny experience might be able to tell you if you should follow up with an oil to keep the fur from drying out, but the cleaning should get the urethra loose from the belly, if that's the problem.