Re: shorten/lengthen throttle cable?
That cable end could slip off and end up in the carb or engine! When I did this mod with the solder I put the paste flux on like you did then light the torch. Then I put the flame on the wire the same time I put the solder up to it. I didn't pre heat the wire and the solder flowed perfectly. I think when you pre heat or tin it burns the flux and it doesn't work as well.