Hi Brian   Good to get a reply from you. Only ask for 1 link to be taken out.  Someti,es it looks like a chain would stand 2 links being taken out but from long experience I know this is  a bit of a rtap. 
 The chain itself does not stretch  but the rivet and the holes they sit in wear . if you get 10thousands of an inch wear on the rivet and 1o,thousandsth wear in the hole  that makes up to  20 thou per rivet  .On a 60 link chain  in 3/6th pitch  there are 120 rivets so if you multiply 12o by 20 thousands of an inch  well that how much the chain has got longer.  Chains dont stretch  they just get wear   Cheers  Joe