Our HWH Kick-Down jacks use brackets welded to the chassis. Not all that carefully, actually. I can see where a rear bracket holed a waste tank. Tank was plastic welded and part of the bracket was butched off with a cutting torch. Fronts were installed sloppily too. One snags on a cross member on retract. I'd like to see HWH's install instructions for their direct-acting jacks on E-Series. I believe an OP here installed HWH Direct-Acting on a Ford-based Class C. Winnebago-something I believe.
We're camping as I send this and we did not deploy the jacks. Site was level side-to-side so we just drove the front wheels up on two 2*10 blocks. Jacks might have kicked down, I just didn't want the frustration.
Pete, can you provide any advice to help the kick-down performance?