So I got my hands on a Motley Mods predrilled kit and finally got the nerve up to work on it. When I got down to make my first solder connection (negative wire on the PWM board) my solder refused to cooperate with me. I spent a decent amount of time tryin to work the solder on the wire but it just didnt wanna solder the wire and board correctly. The solder just kept turning ashy and didnt want to turn into the silvery goo that I assume its supposed to be. Is there different types of solder or does solder go bad or something? Totally at a loss here and I really want to get this thing rollin.