It went very smoothly. The needle popped out once towards the end, but at that moment I wasn't totally paying attention and it just happened. I managed to stick it back in and finish the job, so he got about 150cc of fluid last night before dinner. When we do this he seems to be so much better.
He's sluggish in the mornings after breakfast, but by afternoon he's very alert and becoming active again. He's wandering all around the house and is on the verge of wrestling again with his bud Tornado.
As Mom said in a comment on the last post... "Viva la Avalanche!" We sure hope so!