I don't know much but ...........
I
know my DA100 will bark on the 3rd flip choked,
I
know my DA100 will start on the 4th flip with the choke open,
I
know it will run flawlessly every time and
I
know it will deliver massive power on demand at any attidude or in any manuever tank after tank, time after time.
It is such a fine, powerfull engine that I almost take it for granted.