Judging by your pics, and if I had the right materials and tools, 'Ol Blue would take one day to fix. For your NMRA car, 2 hours (C'mon, so the weight popped off, big deal!). 1:15 for the weight (15 minutes to apply glue and put car in propper position, 1 hour or more to let dry) and less than 15 minutes for putting the body back on (I have trouble with that part 'cause they bend in the middle in my kits)