I have made some progress over past weekend. Washed, mounted and primed most of the parts of MP4/30 model. It does bother me a lot, that I have to spend 4-5 hours washing and mounting parts, but I don't see any way around it. Body will require more work, but over all it is important milestone for me in any build, when I finally lay down first coats of primer to model parts. That usually signals the completion of preparation steps, which I hate. After that it's painting, decal application and assembly. Those steps are a lot more fun for me.