I just want to state that the silicon grease worked wonders for me. The transition from straight -> diagonal -> straight (includes transition from straight left -> straight down) was impossible to do reliably originally, but works now without any issues. I used a non-foog-grade grease that I found at a local hardware store, because I didn't want to wait for the delivery by mail. Hope it is not poisonous
(seriously: the amount needed was in the order of 10s of ?grams, so I do believe I'm safe)
Also, people who are complaining: please do read the KS FAQ. It is not a store. If you want something ready and 100% working, go to a store and buy something that is 100% ready, tested and reviewed. Also, from the nature of the project, it should have been clear (it was to me when I backed) that this is somewhat of an experimental project, with only a few people (no large company) behind it. So, minor issues like this could have been expected to occur from the beginning
. Give some slack to the people behind the project.
For the nature of the project and price of the backup amount I think it is an excellent project that has delivered so far.