I put on a used Showtime tail wheel(dont ask where the ST is)it seems to be better but did come loose after a nice harrier landing. I put in larger washers where the stop nuts contact the carbon fiber part & lock tighted them with just a little play to allow the wheel to turn. After the harrier landing it wobbles some now,so something slipped a little. I'll go with it as is unless more trouble developes,then I'll spring for the Mayhem tail wheel.