Got my 3" air filter.
EXCELLENT looking filter.
Only trouble is.... it doesn't fit my repro 6V air cleaner top lid.
No fault of the filter.
This repro lid has a locating rib for the filter that won't let the filter sit flat on it.
I had the same problem with the K&N filter and the S&B filter.
I'm gonna do what I should have done when I first found this issue.
Mill the offending rib flat/flush with the lid.