I've highlighted the main issue here. Granted global issues that have happened would be unheard of 5 years ago, but normally models dont take this long to appear, at least in 2015 they didnt, but they are now, a certain Barwell based manufacturer being a good example, being rapidly followed by a Margate based one...
You wont see it this side of June 2022 either, so second half maybe. By then it will be 6 years..........