See a few different theories..
For us .030 is as high as we will run the coil on oem flywheel and coil..
The coil can handle much more,, the problem is the OEM cast flywheels have a weak magnet compared to the rare earth magnets used on the after market flywheels... On the racing flywheels indeed .050-.060 is very common... Yeah you might need to YANK the rope a tic harder / faster to getter to fire off...
Somewhat the same thing applies in ignition timing, the higher the timing the stronger the ignition firing needs to be.. Running timing higher than 26-28 degrees with OEM cast flywheels should show a decrease in HP and Torque.. Change flywheels to the racing ones and that 26-28 is very low timing and needs to be advanced...
Many want to make some of things to be like Rocket science,, Common sense goes a long way guys...