Thanks RickNel. I am aware of the PSU idiosyncrasies. It is not just with Cap Values, but also their physical measurements. I recapped an LC Supply once with the same value caps but the physical size differed, so the recapping job became a job and a half of making things fit inside that small case. Eventually I got it together and it works great. CompuNerd went through the same issue as well when he recapped an LC Supply. So it is not only the µf values but also the physical size as well.

Just like in this case - the Tantalum caps I used on these IIsi boards (which I recapped other Mac boards with no problems) were bigger than the physical space the old caps were in. So it took some doing to get them in.