I don't even bother counting the holes. I just lower the landing legs a bit, then drop them till one hits the ground/block, then the other one, and try to get them as close to a hole as possible. It doesn't matter at all to the trailer if the legs are even or not.
As the above poster mentioned though, if they are electric, I'd pull them up all the way, take a measurement, then drop them to the ground and see if the travel is the same on both sides. If the gears are the same they should be. And double check how level your pad actually is where the pads touch.
DW and 2 dogs
2011 Ford F350 Dually LB 4x4 CC 6.7 diesel
2007 Grand Junction 35TMS
Peterson 37(just sold) T-37 R/C Sailboat at home