Low yields on a fairly large, bad ass setup

[WhereAreTheStones]

Yield in 3” vs 6” columns?

Yo yo…looking for some tips. I went from 3" to 6" columns. I’ve noticed my efficiency has gone down. I think the solvent coverage is simply better on a 3" than a 6". I inject a little more slowly and soak a little bit, as opposed to just running through 3" column. Has anyone noticed an efficiency drop when going to a 6" material column, and did you find anything useful in combating your yield loss like soak time, packing or loading style etc? Thank you @cyclopath for making me my very own top…

Bottom feed and soak may help