Ok.. so I am at the point in my LT-40 build to cover the model. Looking at a blue body with yellow wings - kids help me pick -- great to get them involved. Anyway.... the question is regarding tools. I see that we have a heat gun, sealing iron, and a trim tool. Does one need all three or can one just use one tool for the complete job? Certainly having the right tool for the job is a great advantage and truly steam lines the process, so just looking for options.