A couple of things to throw into the mix.
Most of the multiple kits are buildable with care.
Glue choice is a significant decision. Most of us tried these originally with tube glue. Bad decision. I have had much better success with a liquid glue
If you've ever successfully chopped a top, these are almost the same thing, possibly with better fit
Most of these kits were molded with better plastic than what some manufacturers use at time. I'd much rather build one of these any day compared to the gray goo that Ertl/AMT used
Nothing will make most Palmer kits buildable. Those are designed best as receptacles for fireworks such as M-80s.