Re: Silver Solder question
i use a mig welder to make throttle cable ball ends now. one zap and you've got the perfect size to fit into the carb slide.
i've used different types of solder before for throttle cable balls, but had one come off and disappear into the engine somewheres.
for electrical connections i use the cheap, thin solder that comes spiraled up in a little tube.
for barrel ends on cables i use silver solder, paste flux, and a propane torch. there's a post here somewhere about "how to make your own cable end mold"