12000 inspection

Hello, my Z750 is now 3 years old and the 12,000km injection is on. I was thinking about doing it the same. As I have read it the following things have to be done. – Oil change with filter – Renew spark plugs – all control – Synchronize throttles – Change brake fluid What are your experiences with the genant works? Bzw. what would you like to renew at 12000km? Do you do the work the same or bring the motorcycle into the factory stat Do you really need to synchronize the throttle flaps? How do you do it or do you find it unnecessary to do it already at 12000km? Brake fluid is probably already 3 years inside but have not noticed any disadvantages. I will probably have it done in the workshop, or is it easy to do it? What does it matter if I do the inspections on the same level and don’t do a job? bgestempertes Serviceheft können? Thank you for your answers