Break, When I Posted About The Support Bearings, The Plan Was To Have The Threaded Coupler Custom Made So The Support Bearings Would Ride On The Axle And Support The Threaded Coupler (now The Bottom Bracket Part). Then I Came Up With The $3.66 Bottom Bracket Part. I Bought A Pack Of 10 Support Bearings, But Did Not Use Them For Two Reasons; The Bottom Bracket Part Has A Tapered Bore So They Don`t Slide In, And The Axle Had A Slight Bend, Which Would Tear It Apart. Thats Why I Recomended The Heaver Axle. It Has Been Working Fine Without Support Bearings And The Slight Bend In Axle. I Posted Details On Both Forums. My User Name On Other Forum Is "neat Times" ( My Boat Name). The Thread Is "cvt Rack Mount". I Had A Moderator To Shorten The Thread Tittle. The Support Bearing Are Not Needed. Imho. Don`t Have A Lot Of Miles On Them Yet, But Working Fine. I Think The 1/16" = .o62" Spacer Go`s On The Wheel First To Save Some Threads For The Coupler. I Posted Later That The Center 1/8" = .0120" Spacer Is Not Needed If You Bolt Large Sprocket On The Wheel Side Of Free Wheel Adapter. It Was Installed To Keep The Derailier From Hitting The Large Sprocket. If You Want A Cassette Them You Need To Make A Left Hand Cvt Drive. "nuttsy" A Great Member Built The Left Hand Cvt Rack Mount Before Me. He rides It To Work Etc, Has Lot `s On Miles On His. He Had The Robin 35cc Stroke For Several Months, Recently Switched To 52cc 2 Stroke, Very Happy With It. Also, I Would Buy The Rear Rack Mount From "bicycle -engines.com" For $49. And Use The Mount For Right Or Left Hand Drive. I Bought 2 But Have Not Used Them. They Came Be Flipped Over For Right Or Left Hand Drive With A Little Mod. The Mounts Are A Great Buy With Extra Parts For Various Set Ups. By Checking Both Forums I Have Covered It Well. If You Go To Left Side Drive You Lose The Free Wheel, Which Is A Nice Option. Unless You Spend The Buck`s For Special Hub Etc. Hope This Helps. Ps, Life Is A Comprise, You Can`t Have It All. (cassette!! Lol) Ron