Dave Nadler said
1) The CG of the plane was not controlled.
- what is the effect of forward vs. aft CG on max LD?
- what popular plane was measured with a very low LD due to above?
Discuss amongst yourselves...

So what is the typical percentage change in L/D from full forward CG to maximum rearward CG?
Is it a huge change (10%) or minor change? I have no idea.