I put the filler all tne way in, pull the handle back 50% til it stops. Give the hoops a jiggle, and repeat once. I leave the plug out as I finish my transaction at the pump.I have never had a rough running isdue after a fill up.

kirkusblog.com
2016 M3W John A Prestwich Special
1952 Ford 8N
1968 Honda CL175,and 2018 Ural Retro