Jiffy Drill head wobbles

[iced]

I have a ten year old Jiffy and the drill head assembly wobbles back and forth. It has a bout a quarter inch of play. I started noticing it last year so before the start of the season this year I took it apart and tightened every thing down. the shims where there and all seems operational. Is this normal?   

[DR.SPECKLER]

All my gas augers have wobbled.they cant have a tight tolerance and has to have some give in the parts.i have augers from the 70s up to 2016.all have some play in the powerhead to auger.