I have built that model twice. All I can say is "good luck". I could never get the booms to be in correct alaignment. Plus the model has hundreds of out of scale, raised rivets. It's just a poorly engineered model. The HobbyBoss P-38 resolves all of the Monogram problems. It will be interesting to see how you deal with that model's problems.
EDIT: I have nothing against the older Monogram/Revell kits. I think that the B-17, B-29 and B-24 are really nice models. They require a little work, but the final results are really nice. The P-38 is just a really frustrating build. I just do not understand why the booms are seperate from the front wing/fusalage. Good luck. Maybe you will be able to solve that model's problems.