While QRZ.com is a good place to get most answers, but there are other places that are targeted specifically to Heathkit equipment. You might want to join the http://dir.groups.yahoo.com/group/heathkit/ group or the http://dir.groups.yahoo.com/group/HeathKit-Radios/ group. There a lot of users in those groups with SB-101's, myself included. The issue with the S-Meter sounds like a familiar question from the group(s).
73, Martin, K7MEM
Ash Fork, AZ
In my area, it seems that every pickup truck or SUV comes with one or more dogs. It's so common that I can only assume that the dog(s) must come with the vehicle. So logic tells me that, if you want to keep the truck for a long time, go for the multi-dog option. Otherwise, if the dog dies, you have to buy a new truck. I have five dogs (4 dogs as of 4/4/2013, RIP Katie), so I'm set for a few years.