Those kendas are horrible. Seriously, bottom of the barrel. They are as thin as a couple sheets of paper... seriously. They are so thin that they are tricky to mount aswell and often times the bead does not sit or remain in place; compounded by the less than acceptable kilo tt wheelset. And that supposed kevlar layer, if there even is one, is useless and puts dupont to shame. A close friend of mine had some that came with his old kilo and he was going through tubes by the bulk order; I got free tubes nonetheless to patch considering he was too lazy to patch pinholes. He finally got sick and tired and swapped them over for gatorskins and haven't had a flat in a long time afterward.
I still have them folded up back home but I do not anticipate to do anything with them.