I have never ever come across a dreadlock that is "unfixable"...you can fix any problem with a little ingenuity... ;-)

* I use a wool or tapestry needle (thicker than a regular sewing needle, about 3" long and have a big eye to thread into) to sew mine back in, a regular sewing thread (find one to match your hair colour as best you can)...you gather the loose hairs together (don't just gather them all up in one whole lot, but ones that are close by each other, and twist them together so they form one thread)...insert your needle into the dread (about where the loose hairs are connected to the dread) and thread needle down inside dread for about half the length of the loose hairs...and I often find it works best if you zig-zag it inside the dread, instead of going straight down...you should now have your needle threaded through dreadlock, with both ends of needle poking-out. Get those twisted hairs and thread them through the eye of the needle (you may need to fold over the tips so you can do this)...pull them tight through the eye, then pull the whole needle through the dread...you should now have a bunch of loose hairs poking-out in a bunch lower down your dread, and you do exactly the same process, but UPWARDS inside your dread (this makes sure they're never coming out)...do this process wherevere you have an abundance of loose hairs...

* Dreads look like dreads when they do...there's no hard n fast rules on that...it has to do with your hair type, your maintenance routine and what methods you use to lock them. I've always found that the sewing-in does wonders for this though...and the rip n pull technique...realy move things along quick :))

* Loops are easy - I think I posted this in another topic actually lol, but here it is again...you need a regular sewing needle (longer one would work best), and thread to match your hair colour. Thread needle and double it over, knot the end well. Insert needle into actual dreadlock (not the loop), but about where the loop is...make sure it's secure, so it won't fall out. Your thread and needle should now be orientated in a direction TOWARDS the loop, not away from it. Insert needle THROUGH the loop, bring it over the loop and back through again. Pull tight, and re-insert needle back into the actual dreadlock, poll tight. repeat this over and over until loops has either been pulled back into the dread, or has been sewn back in...they usually don't show, but if you wanna hide it after the "surgery" (lol) you can always cover with a bead or cotton binding :))

Good luck! xx