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So platinum procyon is quite less used/ considered pen in our little FP households for obvious reasons (spend few dollar more and get a gold nib, wait for time and one might get gold nib for same price as new procyon) but I still feel its a very good steel nib pen for those who want to try it plus it has nice feed design, good nib, light for metal and understated design especially in dark blue (personal liking this one). Now the main aim is to see if these were present among other FPN users or not and Please by all means add Curidas in list cos from what I understand they are same feed design. Observations Pen runs on dry side of spectrum (no skips or sudden starvation or hard starts, just dry side or spectrum), has small platinum-ish feedback and nib does not show any issues while feed design works well for last bottle ink draining. All is fine until ink is wet or wetter side of spectrum, dry and less lubricated inks work OKish in most cases and will have some minor skips when fast writing when filled in convertor (well duh ink is not lubricated properly). Cartridge is problem from what I felt. If dry and less lubricated ink is in cartridge the pen will have significant rise in skipping so much so that it will be difficult to write 6 words without one and that is annoying. This problem is less in convertor as stated above. The fun thing is that a wet ink or balanced inks (say waterman serenity blue) will not show any issue in convertor and very less issue (noticed in sessions of over 6 pages) in cartridge. A wet ink or even inks on wetter side of balanced (say iroshizuku murasaki shikibu) will have no issues in either convertor or cartridge. So why does the cartridge show the issue while convertor shows it less no none in cases ?..... I am thinking that the ball inside (aggregator) can be an issue for this one. I looked at other platinum pen (preppy is only second platinum I have) and feed end seems almost same but size I cant be sure of (no way to measure but I assume same cos...well same thing...). This made me use some other way to see the issue as I knew ball is the issue cos in convertor things are fine, so I filled water in empty cartridge and put it inside preppy to see balls behavior, always in center over the feed entry.....when hands in same position.....now what would happen if saturation is changed in water (add salt and sugar was best I could think) now the ball seems to be in center and stays there for a while same observation pretty much only denser...now what would have happened if ink was dense and ball space..I think the ball might not have enough space to move properly so ink is having harder time reaching the feed section, combine with already dry type feed and the balance of ink might break which I suspect happens here. Now this is only issue in dry inks or less saturated inks...ironically I observed it first in Platinum's gifted aqua Emerald color..(color was not to my liking and performance was subpar in most case) which stated the series of weird tests and observations. Sadly procyon is metal and I cant see the insides to do proper testing and pen is actually too good to open (why bother when I know convertor works perfectly) What have others experience been, has anyone tried curidas or procyon with such inks and had issue in cartridge or convertor or any other issues with these guys. Share your experience and opinions and suggestions welcomed.