Lamy Aion - doubts about the feed and the barrel closure

[Azulado]

It failed again. The ink was very caked despite the spring. Now it stopped writing. I put back the previous converter. It was working reasonably well. I washed it with soapy water (car wash soap) and did not rinse it with water. Now it is writing very wet, but it may be because of the soap. 
If a feed channel was clogged, I doubt it would write like that. 
The feed is apparently the same, but I'm not sure, there may be a slight difference in curvature at the top. 
Something that no one has noticed is that the converter has a rubber gasket at the mouth that is not fixed. It has a little movement and comes to protrude from the plastic rim. 

 

 

[jchch1950]

It can be the converter and also together with ink. Maybe you can try a different converter with one ink that you know is "well behaved".

[Azulado]

I have now figured out how to insert the cartridge into the body without friction on the thread on the last turn. In a Reddit post it was necessary to put the body with the thread facing up and then insert the cartridge. I tried again, but using a block of wood so that the body was straight. 

Care must be taken to centre the cartridge in relation to the body axis. What causes the excessive friction is that the cartridge is a little crooked and this affects the threading. I noticed this when I screwed the body in with force on one side. Then the friction was noticeable. 
Lamy recommends on their website that you insert the cartridges by placing them in the barrel first and then screwing the nib section upwards. This is less important on other models, but the Aion's adjustments are extremely precise. 

 

[Azulado]

9 minutes ago, jchch1950 said:

It can be the converter and also together with ink. Maybe you can try a different converter with one ink that you know is "well behaved".

Yes, I think so too. I have already consulted the Inez Fritz list to identify inks with lower surface tension. As for the converters, I have noticed differences between them. I use the one that works best. 
I have now noticed on a Safari with very little ink left, that the ink is sticking to the inner edge of the mouth and the ink is not reaching the nipple.