You all have some really interesting experience with GKs. I just bought 700x32 GK SK and mounted them with no problems whatsoever. Yes, they were a bit tighter than usual (a bit tighter than other folding bead tyres), but still I managed to mount them without using tyre levers. After reading this thread I was prepared for a struggle, but compared to Soviet-made tyres I have mounted in the past mounting GKs was a walk in the park.