I was printing the awesome lightsaber by "infinati", and noticed the holes where not properly connecting, so I checked if anyone more had the same problem, and I was right. So, I fixed the problem of the holes, and it's working for me, so if you have the same problem, I hope this works for you ;)
Infinati, congratulations for your fantastic design!
In the designing program, the "male" and "female" connection parts are supposed to be 12mm (diameter), but when printed, the male connectors go ~11'8mm, and the female 11'4mm.
What did I do? I edited the parts 2, 3, 4 and 5, making the female connectors bigger (12'4mm of diameter), and printed the part 7 at 93% of scale. The rest of the parts don't need to be modificated.