Many people have upgraded way beyond what is necessary. The "factory" kit is well designed and works as designed.
If you need help assembling it use Connor. https://www.rocketryforum.com/showthread.php?119859-Eggfinder-Eggtimer-Assembly
If you need help assembling it use Connor. https://www.rocketryforum.com/showthread.php?119859-Eggfinder-Eggtimer-Assembly