Extended swingers make the front end heavier and hinder cornering. They dont balance the machine. The stock swinger will get over logs better and is much easier to loft the front end at speed. Honda designed that lenght for a reason, because it works very well. Id run that stock axle also like yargerb mentioned.
Shart Guard .......Use it !
Pink Powerwheels Barbie trike
Wamo Big Wheel with a solid trikecycle front tire
Mini bike 3hp Briggs and Stratton with cambells soup can exhaust
Schwinn stingray with coaster brakes
1985 Crash and Burn champ
1st place National Endo Championship