We've had two Class C's with HWH Kick Down Jacks. I don't like kick down for two reasons:
1. Because of their pivots, they don't support as solidly as direct.
2. They often want to extend before kicking to vertical, then may retract without folding.
Problems with Jacks on a Class C:
1. The frame is narrow, so raising one side also raises the other side.
2. If the Class C is short, raising the rear also raises the front.
This can result in the coach being raised higher to reach level than it would be if jacks were nearer the sides/ends/corners, or if the coach is simply driven onto blocks.
I usually drive ours onto blocks. Easier to place blocks at the wheels than fish around way under trying to get a jack to go vertical.
Part of the goal of jacks is to stabilize. Again, the tight pattern the jacks have to be in with a Class C chassis reduces the stabilizing effect. Upgraded Sway Bars 1-3/8" front and 1-1/2" rear did more for stability than jacks did.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB