@Shalaska
Ive just pulled out my one Lamy converter.
The converter in the photo does not look like a propriety Lamy converter, It looks like an International Standard converter. In which case that would account for leakage and poor performance.
Lamy. most of the Japanese, Shaeffer and a few other manufacturers use propriety cartridges and converters that are not interchangeable with other brands.
Some Chinese pen models claim to use Standard International cartridges but they are sufficiently out of dimension that only their own products will work.

@ajsadauskas @Godfrey642 @fuck_cars
There s some really old research out there originality focused around Volvo cars that came to the conclusion that people drive to a constant level of personal risk. Put them in a safer car and their driving will be riskier. This lead to memes about spikes on steering wheels that threaten drivers.
Also many younger people have never seen a police patrol on the roads so they feel that their behaviour carries no risk.

@TDCN @Showroom7561
Two examples from Australian states:
https://www.police.vic.gov.au/hoon-laws
https://www.police.wa.gov.au/Traffic/Cameras/Speed/Hoon-driving
Just a few days ago the news carries pictures of a vintage Holden muscle car being crushed because the owner had been driving at 250 Kph in a 110 Kph zone.