Revell 1/48 B-1B
I have had this kit in the stash for about a decade now. (The day I bought it at Happy Hobby in Milwaukee the owner, Dennis, called me out the front door and an actual B-1 was doing a flyby at Timmerman Field! True story!)
I have built one of these back in the 90's and I had bad memories of it. With my previous experience I was determined to correct all the problem areas. The major time spent on this kit is painting the cockpit, wheel wells and bomb bays. After that assembly goes quite quickly.
The most important thing to pay attention to is that the bottom fuselage piece. It is a large piece and it ends up rather flat. It should have a slight vee shape to match the bottom of the bomb bay formers.
(The perfect part will come while gluing things together.) Pay attention when gluing the forward fuselage halves together so all the panel lines line up. The rear mating surface will have a slight peak to it on the top and bottom. Dress this with a small file so you get a straight line between the upper two and bottom two corners. Failure to do this will leave large gaps on either side. (Or a crooked fuselage if you close one side up.) The extra attention during assembly has allowed me to build this one without having to fill seams with putty. I just let the old Testors tube glue squeeze out of the joints and sanded everything down when set. (Make no mistake, there was still a LOT of sanding, but it's in the paint shop now!)