Hope your kitteh feels better soon! I agree with others; if your vet did not also do bloodwork in combo with the surgery (to rule out other issues) then you should look around for a new vet. Also, definitely start giving your baby either Laxatone or Petromalt or any of the “lubes” for kitties. They all do the same thing, just about, but have different flavors. If you find one he likes, he may lick it right off the tube (as one of my cats used to do). The various lubes are specially formulated to help them pass hairballs and will do a much better job of that than butter or olive oil or what-have-you.
Hope your baby is better soon!
I just spoke with the vet. He held down some food and water and they gave him some laxative/lubricant. They x-rayed again and the mass is moving. Once it moves far enough, they're giving him an enema.
Thank you for all the great advice. My wife and I are picking up some professional quality clippers and assorted cat stuff.
After calling around, every place that grooms cats sedate them. I really don't want to knock him out once a month so we'll trim him ourselves. He should be alright if the clippers aren't too loud.