Has anyone else been having problems with opening tins? We found it really hard to open tins with a previous tin opener. So I got an old fashioned butterfly one and this didn't work very well, so bought another from Asda (35p) and found this didn't work. Finally went to John Lewis and paid for an expensive one (=A37) and have now found this doesn't work properly.
This made me think that maybe the manufacture of tinned goods has changed slightly.