RE: crazy roll
The funny side of this, is that a scale Extra , not some cobbled up so called POS 3D varient, is a extremely easy to fly design
The usual problem is that the RTF models are usually grossly overweight and that,coupled with extreme throws and typical aft cg (most are tailheavy out of the box) provides the unsuspecting purchaser with a model totally unlike the one he was really after.
The CAP 232 -from years back suffered the same fate - The rash of kits available were almost always extremely overweight and tailheavy.
the moniker "Snappin Cap " was assigned to it and the experts all solmnly noted that " Caps snapped."
As a sidenote consider this
Many smallish scale aerobatic models of say 400 square inches -had a typical weight of 4 pounds
(ugh!)
a good modern electric powered model -same size- weighs in at 2 pounds.or less
Does anyone think these examples fly the same ?