Hey all,
I've been riding my Savage since September (and yes, all through the winter here in IA), and I've found that my plug has gotten more fouled than I would like or expect for the setup I have.  I have a dyna muff, 1/2 spacer, and a 152.5 main, and through the winter I changed the plug twice.  Each time I did it, it looked a little dark for me.  I just thought it was cause I'd been riding with the enricher a little more cause of the cold, and I thought it would change with the warmer weather.  

But of course not!  There always has to be something wrong

So I pulled my plug today, and it was pretty dark, as usual.  But luckily, i still haven't found out how to get the thing out without taking the tank off yet (doing the little spark plug door thing with the chrome cover still doesn't allow a straight shot to the plug), so I had to disconnect the fuel and vacuum line.  Guess what I found!  Gas in the vacuum line!  No, not a lot.  Just some wetness that was distinctly gasoline, but nothing severe.  I don't think my petcock diaphragm has gone out completely, but it sure seems to be on the way out.

Anyway, with this discovery, I have diagnosed my over-rich running problem, and I have decided to just block off the vacuum line and run on PRI until I can do the petcock mod.

Question for you folks:  where can you find the little rubber caps for blocking the vacuum line connections?  I went to the hardware store today, and the guy helping me was absolutely clueless as to what I was talking about, so I ended up not getting anything.

I never liked those rubber vacuum blocking caps.  They dry out and crack, leak, and fall off with age.  I use a tight fitting machine screw.  I coat it with Permatex sealant, and thread it into the vacuum hose.  That will last for years.  
I changed my petcock to manual as per the instructions on this site, and instead of putting a rubber cap on the diaphragm tube on the housing, I took a short sheet metal screw, heavily coated it with JB Weld, and screwed it into the housing tube.  Once the diaphragm is cut, the housing can fill up with gas and a rubber vacuum cap is not much protection against fuel leakage.

ouch!.......Reelthing...........you stepped on my foot.......I know it is dark in this cave but come on..........use a light every now and then!