I am a design engineer by trade so understanding how things work is second nature to me and at my age I do have many hours of stripping and rebuilding both bike and car engines. The manual is very good at explaining things. It has to be followed to the letter and if that’s done it can’t go wrong. The skill is knowing and understanding what it is telling you to do. If you doubt yourself then I would suggest to not even start. If you are confident you can do it then I am happy to help guide you through it.