Feature Image on home page and post page

Hi,

I must have done something but for the life of me can’t figure out what I did.

My grids were lined up perfectly on my home page, and now they are not the same anymore – http://www.wanderluststorytellers.com.au/ (looks like it is the feature photos fault)

Also, that same photo is massively large on the post page instead of cropped as per the highend theme option – http://www.wanderluststorytellers.com.au/the-city-of-the-dead-or-a-fairy-tale-town-civita-di-bagnoregio/

compared what it should look like on this page –
http://www.wanderluststorytellers.com.au/our-story-of-rome-a-million-steps-day-two/

Any advice how I can remedy this? Please?