In reply to Babika:
Bears - we did not see any bears in Prokletje (Bjeshket e Nemuna) mountains on the Albanian side, even somewhat off the beaten track. Might have been just lucky, or I guess they could be wary of people when everybody and their ten year old son has a rifle
Navigation - the main hiking trail (Peaks of the Balkans) and others with the most traffic (i.e. the easier ones) were pretty well marked. Others - not so much, some virtually non-existent, few forest ones totally overgrown (ended up bushwhacking through small trees or heavy juniper overgrowth on a slope quite a few times) and some marked ones lead elsewhere then the maps showed. We used Windymaps app (basically offline OSM maps, but nice), as they show even the small local trails, but don't follow them blindly, the trail could be 20 years old Up higher in the Alpine terrain some cairns and occasional markings. Use common sense.
Borders - you can get an inexpensive mountain border crossing permit in advance, if you need to cross the borders in the mountains and finish in different country than you started.
Cooking & fuel - good luck finding screw-in type gas cartridges anywhere in Albania and possibly Kosovo. Even in Montenegro they are very hard to find. Locals use these piercing cartridges with a dedicated small stove that you have to keep on until it's empty (these can be had very cheaply at most markets and stalls, but they are not the lightest or most practical, and it's just summer butane). Get a liquid fuel stove or plan for it.
The only reliable source of screw-in cartridges I found was in Podgorica (Montenegro), only after a very thorough search of albanian and montenegrian websites and a few phone calls - Okov (a big hardware store chain), they even had 4-season mix (isobutane/propane).
If you need any more details, feel free to PM me...
Post edited at 13:57