diff --git a/4.-Final-assembly.md b/4.-Final-assembly.md
index 0d6da05..cdbcb4a 100644
--- a/4.-Final-assembly.md
+++ b/4.-Final-assembly.md
@@ -15,22 +15,18 @@ In this section, you'll go over how to put the two halves of the enclosure toget
 - 1x snooker ball
 
 ## Step 3: Put the top onto the base
-[![Ploopy Trackball Final Assembly YouTube Video](https://lh3.googleusercontent.com/pCK_OrN8liihaSrH5aFGFaO8p1wyzNk0m1vXkxIdAvlzxrKG-YOdHLz-Z3pFII0WMeOXBG5i6u4bKUZiLn9LpfTSFv7WwLusvEyG-CzcCXDsmvmifr1boPnBuz5LJeru3DLe4GtltQ_9LgAH17jkrYZAzp_mveubstp_sx45ecqAq6B7l4ZUvkPtHN6CXfg54p3nqcFDoa_Dy6iCjy65ZZptgRkxAkZw9v3pbXT2pwKyas58wieT-iTXmfzbQw7X2km7I5yllyMY-Fhr4oOTia2-XNjXjePcaV-ekT-ePFudMakbEKUKbihFNESPX5zqSK87Aj1qjOnfoFA4DGtpgwdtNlAANF1xV5yNNavs1bg9AC5KWrZEK9pY8-64jXsEyPd2z-u-AoBnyIaKQzlvd7kgf-L9Bvb14PCd1bjtxKcDVx1YTP3Uh_feHjrd01xz1gTQQ_Ik3uLET1R8VNAEQQoeQrt7JTmXFXz58_TgJ6ZCcrFvSxaNlQDUwQfDcLOwpmqhx1pVBFUvOUE-YN5pcMm_QLMSSl0vLptOn80AjPTljgbwAZxbM2sSCyxKybm-f94v8myJb1SikyFGmBTSMIKh8KBokNRVw_8czMOTuL2w6Q_7HYH-W7VqinDDDoX8kohDEdi69S9zDwy_wyvezsNH4Yt7hEVsYylN1tkYvD6sidnR2FY-cpITUwxo5seqTp-mnfMZh9g2VxZUfgqW4wmCd-k-6JoRUXKMBKM9649O3C0=w1130-h753-no)](https://www.youtube.com/watch?v=l6ZIF_83VuQ)
-
 To put the Top on:
-
 - Align the USB-B connector with the Top.
 - Put your thumb on the primary buttons and your index and middle finger on the secondary buttons, and depress the buttons gently. (They should click.)
 - Pull the Top (it will bend slightly) until the peg from the scroll wheel enters its sheath in the Top.
 - Press the Top into the Base with gentle but firm pressure until the two are seated together entirely.
+- [Here's a video showing the above steps.](https://www.youtube.com/watch?v=o0BSe5tcxug)
 
 To remove:
-
 - Put your thumb on the primary buttons and your index and middle finger on the secondary buttons, and depress the buttons gently. (They should click.)
 - Lift the rear end of the Top until the scroll wheel peg slips out of its sheath in the Top.
 - Pull the Top off.
-
-See the video for an example of how to accomplish this.
+- [Here's a video showing the above steps.](https://www.youtube.com/watch?v=IlaOSYDtQRs)
 
 ## Step 4: Insert the screws into the base and apply the friction pads
 ![](https://lh3.googleusercontent.com/BPjsb6ve06zRUGCbNSzeDNk04lssJfnJcaqkROE7XBmiuNPzj4c-7z8sLM5TEHzfDXdt2rpZz1G2Un28b2-SesGHnMVJNvesj6k2iCZJepmYJDXl0-YrseGuGsxVQ6vnlcJf1MPihEVwNysR3RPbXMHnMudxf6T4yMuLwpnQytmp5zcANJ7H1Lmeb2vzYp_IEpGk8QWTl6MEwtsBd8oVKL3rBTLCylvQLKn6u7qH0molkdJqGw6P8icG9KAAw45IiblrTEw86R8WyYHqZnnK7aS_llj8wWfQHXXnjQaHgxckesXRMwdU8-zHZPLfiX27tWVLXkltj9zEkgYR_bpDQRmQLScLLYogXjgc02HFURhZgwvRVx-ng3I1BVC4oVAnQ4XgcZ9uBft0BHLoPQXizncqyUIP37D-1-tTnY5nrO3uSTjDYScyy0I3R14a6Yuenfqy3lmQEZIbhobmJR6bRas_sNvNVwBdUhCpYysT73iRFp96WXHlK9i2k45QHLSNGjp2ptk08A4rqGXO972u_30gc4ulLf4Bi9x3Kq0MHJyRW_cWHAGdtwllVLZ0lwnGrLiTWerW4vjNskuZZ53j2JE5sF8C3xC9QW21dElNKWV8VzbmokGY2-Snpj4BH3B8paGNproVeGMT0M-WFHxmhZLpLaPdE2hH7pI4eqsVq3YqNDIXeDGr6qyrb-hFWkppYs3Ct4sGYaRqDQ3b_KwOjpGWFCS0LgKJxSlNh_XO0L59yQ0=w1454-h969-no)