I was at a gun show last year and one dealer had a table of Jimenez autos, .380 I think. They looked like they were made in someone’s garage with a hacksaw and a drill and then finished off with a grinder.
There was a ridge on the takedown catch that stuck out almost 0.10". That's why it wouldn't come apart. If they had taken a grinder to it first, it would have been an improvement. :)
The metal was of such quality that I had to use a carpenter's knife to remove the ridge.