I recently bought my first set of replacement pickups and wanted to install them myself. I researched a little and most people seemed to recommend the 60% tin 40% lead solder so I got that with a 30 watt soldering iron. When I got home I realized the iron said lead-free solder recommended. What would happen if I ignored this and used the 60/40 solder? The iron came with some lead-free solder but I've heard it's harder to work with. As a first-timer I'd like to make it as easy as possible.