I recently changed my chain for the first time without getting the shop to do it, unfortunately the instructions I followed has led to the chain being too short to fit on the largest cog when on the big ring. Of course this is bad practise but for the times it happens by mistake I don't want to find a jammed chain.
It is a Shimano Ultegra chain currently joined together with a quick link. My question is, can I extend the chain using the pin that comes with the Shimano chain and keep the quick link in place. These will obviously be quite close together so I am unsure if this weakens the chain. My alternative is a new chain which I do have.