Posts are sometimes in ALL CAPS why?

I looked at your links and the casing looks consistent between the two. Please can you elaborate further or even better please provide a screenshot of what bits should not be in uppercase.

The uppercase elements will have the following code:

text-transform: uppercase;

for example

#content .entry-title {
text-transform: uppercase;
}

basically you need to add some css to you custom.css (not style.css – as you would loose the customisation when you upgrade) to override the above styling:

#content .entry-title {
text-transform: none;
}

the example above will remove the uppercase and render it the way it was typed in so

CASTLE: SEASON 6 EPISODE 5 KATE’S V-NECK BLOUSE

becomes

Castle: Season 6 Episode 5 Kate’s V-Neck Blouse

Hope that helps

PS: Other text transform properties are

text-transform: lowercase;

text-transform: capitalize;

text-transform: initial;

text-transform: inherit;

Basically its the body text of the post, not the post header/title

https://www.shopyourtv.com/wp-content/uploads/2013/12/ss.png

Looks fine to me but you can always add the following code to you custom.css

.single-post .entry-content, .entry-summary span {
text-transform: none;
}