Found this and been trying to squeeze a few more points out of it by adding an extra stop but doesn’t seem to like it. Does anyone have any ideas if this can be done? Thanks

Inv - lhr J 13th sept
lhr - jfk A 13th Sept
jfk - las J 14th Sept

las - jfk J 19th sept
jfk - lhr A 19th sept
lhr - inv J 20 sept

780tp £1753