I was going to put a KMC chain link in to my Shimano 10 speed chain tonight, so got the chain tool out. I noticed that all the pins have concave recesses apart from one which is flat, so I plumped for that one.
One side has popped off, but I can't get the pin to push out. Are these new fangled chains not as simple to split as a good old 8 speed chain, have I done some thing wrong, or is it that I am not using enough force (new chain tool too)
Ta

