FD 1/8 Buggy Stutters

[BrianG]

The circuit board where the wires enter looks like at least a dual layer board. And, the traces are kinda big and act as a heatsink when you are trying to solder. You have to be careful not to put heat on the solder joint for too long or the heat will travel along the traces and heat up whatever is nearby possibly damaging it. It's better to use a hotter iron for a few seconds than to hold a cooler iron on there longer.