1995 Honda Civic Transmission works well until warm

Check your fluid level & color. It sounds like the fluid that came out when axles were removed did not get replaced. The dipstick is on top of trans, make sure car level, fluid should be @ top of perferation section on stick. Should be red in color. Smell the fluid also, if it smells burnt at all, trans is all done or trashed. If it's overfilled, that will cause damage also. Converters useually don't shutter, thats more likely a broken spring in clutchpack in 1st/2nd pack inside trans. If a repair shop did your axles, you may have a case. If low on fluid, it only takes 2 minuetes of driving to burn up trans. If it's slip'n that bad, I'm affraid trans. Is toast. Sorry for bad news. Good Luck.