Not only screws, I have the limited edition & I had to polish the tumbstud, it continued to rust chronically, probably because it has an aggressive texture (on the limited edition), that tend to retain dirt & dead skin; my Mark 1 also has developed blade play in all directions.
I practise Kali, IMO the Mark 1 is a good knife, but it is overpriced (but here in Italy it costs more than the ZT & the limited edition is expensive, when I bought it I was a knife newbie) & overhyped, cutting ability is medium (Manix is far superior, even the ZT 0301), the ergonomics of the knife are very good but they are ruined by the secondary safety (tumb is on this little moving piece of metal, using filipino grip) & the cord cutter (less manoeuvrability & not comfortable in icepick grip).
There is also a opening problem, if you use straight movement to use the tumbstud (not a circular movement, I prefer straight) the guard of the knife is to close to the TS & opening is harder (the ZT does not have this problem).
I also have the ZT 0301, I love it, it is awesome, state of the art ergonomics (on par with the loved Manix, my favourite folder), great cutting edge & the S style of edge is particularly good for knife fighting (academically speaking): the concave part of the edge is great for blocking & the convex part is great for slicing; but it is also a great utily folder.
The sad thing about the ZT 0301 is the blade retention without the speedsafe, there isn't the detent on the blade so you are forced to keep the speedsafe (I trust a lot more 100% manual folder than assisted or auto).
Secondary I also noted a bad dehorning on the blade & flipper (the handles are well dehorned) of the 0301, but this doesn't ruin the functionality of the knife.
They are both great knives, but I prefer the ZT 0301 over the MOD... & I prefer the Manix over both
(but the ZT is a close second:thumbup
For full review of both knives here are the links (in Italian but there are many photos):
-ZT (I drilled the damm detent by myself):
http://www.coltelleriacollini.it/community4/modules.php?name=Forums&file=viewtopic&t=8015
-MOD (tumbstud polished by me to prevent heavy rust, for now the scews are only periodically cleaned & oiled, but maybe in the future I will have to polish even them :thumbdn: ):
http://www.coltelleriacollini.it/community4/modules.php?name=Forums&file=viewtopic&t=6253
(you can even see the Keep It Complex school :thumbdn:, when the knife is disassembled)
For compact light carry on MOLLE stuff, I suggest to you a nice KaBar BK11 "Becker Necker", I have the old Camillus model & I highly recommend it (I also love carbon steel, but you will need a little bit of maintenance):
http://www.coltelleriacollini.it/community4/modules.php?name=Forums&file=viewtopic&t=7315