I made a phaser pedal in highschool as a grade 12 electronics project... It worked.. for about a day.. then something happened to one of the components.. (an expensive IC that couldn't be ordered in single units).
Point being:
When you handle DIY Kits, be very careful with the components, and make sure you place the IC's properly. Improper orientation in a circuit can damage the parts very easily, and you'll need to order new parts.