While Class A sales appeared flat during same period, Class B's "soared" with 26.6 % gain in August.
SSI: Class B Sales Soar in Aug., Enjoy 26.6% Gain | RV Business
It also seems that Class C's grew at a significant rate, although not quite as fast as Class B's.
SSI: Aug. Motorhome Sales Grow 5.9% as C’s Roll | RV Business
Any thoughts as to why Class A's may be lagging behind in growth rate lately?