update,

been flying the extra/husky combo with a MSC 25x10. a little wider blade than the square tip zinger. 5900 rpms with thrust at 33.8 to 34lbs of thrust on digital fish scale.

seems to fly a little faster, even though only doing 5900 rpms.
vertical is still fine.

next step, Mejlik 26x10N carbon.

i also noticed that my engine is a very leaky beast... this normal for conversions??