[TowerTalk] Tri-EX Tashjain Towers fit 2" mast ?

[Chris Merchant KA1LMR]

I notice the 4" sleeve below the thrust bearing of a WT-51 tower is just a hair over 2"  ID. I am wondering if an actual 2" steel 1026 Steel pipe will comfortably fit inside and turn  without a problem when greased?  I tested a 1 7/8 pipe  there didnt seem to be much play in the sleave but was a little sloppy fit  in the upper  thrust bearing lip. just dont want to spend $300 or so on a actual 2" mast if its not going to fit.