My workbench is sinking

My cantilever design in this workbench had a flaw. I'm going to show you what I did to fix this workbench I use in my garage for woodworking projects.

Here's the original build list for the bench:
1 - 3/4 4ft x 8ft Birch Top - https://homedepot.sjv.io/4PGrBG
2 - 2 in. x 6 in. x 8 ft. #2 Prime - https://homedepot.sjv.io/9gLMBQ
3 - 4x4x8 Pressure Treated - https://homedepot.sjv.io/eK1rxZ
13 - 2 in. x 4 in. x 8 ft. Prime Whitewood Stud - https://homedepot.sjv.io/rQaz1d
4 - 2x2x8 Furring Strips - https://homedepot.sjv.io/GmK0Y6
9 - 1 in. x 6 in. x 8 ft. Ground Contact Pressure-Treated Board - https://homedepot.sjv.io/B0nzV0

5lbs of 2" construction screws - https://homedepot.sjv.io/R5GON2
5lbs of 3" construction screws - https://homedepot.sjv.io/y2qePB
1 box large head 3" construction screws for wheels - https://homedepot.sjv.io/LXKxy3

Dewalt 7485 8 1/4" Table Saw - https://homedepot.sjv.io/9gLMjY
Stacked 8 1/4 Dado Blade - https://homedepot.sjv.io/g1OAev
Dewalt 4 battery charger - https://homedepot.sjv.io/EKEzP9
Drywall T Square - https://homedepot.sjv.io/Nk92DV
DeWalt 4.5" circular saw - https://homedepot.sjv.io/rQaJ3v
DeWalt Jigsaw - https://homedepot.sjv.io/ZQ6Y5R
DeWalt Random Orbit Sander - https://homedepot.sjv.io/Orey0A
Klein Loose Cable Stapler - https://homedepot.sjv.io/zNxnKm
3/8" Roundover bit - https://homedepot.sjv.io/zNxnYx
DeWalt 12 compartment organizer - https://homedepot.sjv.io/GmKRvn
DeWalt Sawzall - https://homedepot.sjv.io/EKERoD

Right Angle Corner Clamps - https://amzn.to/3Na2Rpo
Automatic Vaccum Switch - https://amzn.to/3Lq9nad
6 foot Heavy Duty Power Strip - https://amzn.to/3AsZO47
Jarlink Heavy Duty Pencil Sharpener - https://amzn.to/3Lq9nad
4" Caster Wheels (need 2 packs of 4) - https://amzn.to/3Lq9nad
Bluetti LifePO4 Battery - https://amzn.to/420QIap

00:00 Introduction
00:16 Sagging Top
00:49 Remove cables
01:15 Jack
01:40 Sawzall
03:01 Circular Saw
04:03 Mount support board
04:30 Check surface
05:23 Reinstall screw boxes

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