Picked it up from a local B&M and sent it to Chowderhead. I stumbled onto it before I saw Rob had the RM5's up on the site. Used it on my K100 and found the post that said Tom could take damn near any topper and make it a bottom feed. Off it went to get an upgrade.
You said you like a tight draw and with this the adjustment for the airflow is horizontal, you can damn near shut the thing down and still have flow across your
coils.
It's a good topper and Robs are ready to rock!