It may not be too much. Timing lights don’t all read the same.
Some are worse than others. It could easily be 2-4 degrees different than a different light.
Also, the GIANT elephant in the room has teamed up with the bull from the china store and they are playing around in the OP’s ignition.
Or, saying it how I should have said it at first, he may have 36 at 3k rpm or where ever he’s setting the total but at 6k it may be retarding 4-5 degrees or more.
He may be just right or at least very close at that 36 number for what he has.