Partition missing on late 2014 iMac

So, I decided that I wanted to try Windows 10 on my iMac. Went to partition it, went okay. Then the problem started happening when I went to remove the partition. I have the 1TB fusion drive. It's showing up as a 857GB drive in my disk utility, and will not partition up to 1TB.

I've tried to go into the recovery partition and repair the partition, but it won't see anything more than 857GB of drive.

If I do a diskutil cs list, this comes up:

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 9AFB0F3F-25D4-40E1-80D7-ADDE45A9A29E

=========================================================

Name: Macintosh HD

Status: Online

Size: 862855356416 B (862.9 GB)

Free Space: 114688 B (114.7 KB)

|

+-< Physical Volume BDE3514A-D3F2-42C5-8601-33A33544536E

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume 11AE7D34-A33C-4C93-B810-39D34F6965AF

| ----------------------------------------------------

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 741866504192 B (741.9 GB)

|

+-> Logical Volume Family 86F568DA-BBFB-421F-A501-B757397FA999

----------------------------------------------------------

Encryption Type: None

|

+-> Logical Volume 574C3404-A44A-4B49-B622-3736E1958957

---------------------------------------------------

Disk: disk2

Status: Online

Size (Total): 856999985152 B (857.0 GB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse