I was never a good sweeper. Just never pannd out for me even with consistent practice. It's a lot better than even a year ago. As far as tapping I use a thing I call Triad tapping as it outlines certain traids and gives you a more intervallic sound. I've also been working on the Greg Howe hammer tap concept which is liberating and frustrating all at the same time :)
Gotta keep taking whacks at it.
All the best,
Joe Pinnavaia
http://www.myspace.com/testtuberhinohttp://www.guitarlessonsbuffalony.com