Brief Description: Roll Bar - Mark hole locations in bottom flange.
As others have done I used my new handy dandy hole spacer accordion thingy to mark hole locations on a piece of masking tape. Basically I put the tape on the roll bar channel flange and using the plans I marked the first and last hole location on the tape. Remove the tape from the flange, flatten the tape out and use the accordion thingy to mark equal hole spacing locations on the tape. Then put the tape back on the roll bar flange.