Yes, I too have built some kits that were less than perfection, to put it mildly. But let me ask this: If you persevere with a marginal kit, does it not improve your modeling skills and tax your intellect and experience for solutions? You could probably train a chimpanzee to put together a "snap tite" kit, or some other that required little in the way of problem-solving.
When I think back on the hundreds of models I've made over a 50-year modeling career, those that stay in memory as "fun" were the ones that were also a challenge, a challenge that I rose to and won. And in the process, gained modeling skills. And isn't that a wonderful way to prepare youth for the challenges of the world?
Tony Ryan