Well I am under no illusions that at the end of this I'll be serving bombs. But I do know there's a lot of improvement to be had in this stroke. The improved toss and easier swing (and resultant increased pace) has given me a glimpse of what could be, so I will keep plugging away.
The experience with my retooling the forehand was much the same way. It's a series of small "eureka" moments which add up. Then eventually a big breakthrough occurs, and you're over the hump. Hopefully it'll be the same with the serve. Anyway, as I said in that thread, I rather enjoy the learning process