Previously I was using an SRAM powerlink. no problems.

Installing a new chain - the missing link is practically impossible. after 30 minutes i give up and search the interwebs to find this useful tip -

rotate your chain so that the missing link is on top, directly between your cogs and chainring. apply breaks and push on the pedal. SNAP! its in place.

Shouldn't i be able to do this with my fingers??

like i said....no problem with the powerlink. and this is the missing link that came with the kmc chain.