Square Slate SBox not square

[Itsnotme4]

I want my button with its image to be a square 64x64 pixel big. But There is som weird border on the sides of the image. (All buttons have the same issue with side margin/border/padding, one of them is sbox 96x96 though)

SNew(SVerticalBox)+ SVerticalBox::Slot()
.Padding(ButtonPadding)
.HAlign(HAlign_Center)
	[
	SNew(SBox)
	.HeightOverride(64)
	.WidthOverride(64)
	.VAlign(VAlign_Fill)
	.HAlign(HAlign_Fill)
	[
		SNew(SButton)
		.VAlign(VAlign_Fill)
		.HAlign(HAlign_Fill)
		.ContentPadding(FMargin(0, 0))
		[
			SNew(SBox)
			.HeightOverride(64)
			.WidthOverride(64)
			.VAlign(VAlign_Fill)
			.HAlign(HAlign_Fill)
			[
			SNew(SBorder)
			.BorderImage(FMenuStyles::Get().GetBrush(TEXT("SB_DoorIcon")))
			.Padding(0)
			]
		]
	]
]

Adding the SBox withing the SBox was my latest attempt. Tried that because I saw that the Widget Reflector added it anyways.

[Everynone]

Default button padding looks like so for some unfathomable reason:

[Itsnotme4]

That worked! I added a custom style and now an image or text fill the entire button. Insane that they have it on by default. Could I make a doublet out of SButton (call it SMyFavoriteButton) and then change the preset values to my liking? Or maybe just change the default SButton directly?