I also had the problem w/ the Fuse-B pigtail (30A fuse holder & short wire) problem on my 2002 VFR w/ 4k miles. The fuse, holder and short connector were completely fried. Fixed it by making my own pigtail.
Jeremy556 - Your post got me thinking a bit...
When i fixed my bike, i noticed that the R/R Output ties into the Fuse-B wire (thus system charging is done over this line). I'm thinking that its possible that the monitor wire issue may be the underlying cause for the Fuse-B pigtail burning up. Meaning too much current from R/R will begin to toast the weakest link. The Fuse-B pigtail issue may just be a side-effect, not a problem source. Anyone who made a beefed up Fuse-B pigtail may just be diverting the problem elsewhere.
FWIW I'll be doing my monitor wire ASAP.
[edit] Which wire is the monitor wire? A search for "monitor wire" only returns 3 threads, none of which discuss the issue.