All of the Airfix 1/24th scale kits will have similar problems. They weren't perfect when first released, 40 years ago, but could easily be sorted if the landing gear was set in the down position, rather than be able to retract. But, now that the moulds have been well used, the parts are not as well defined, and need work to allow them to locate correctly, as you have discovered.
But, considering the age of these kits, they are still reasonably good today (apart from the rather high price, which is a bit steep for what's provided), and can make excellent display models with a bit of work.