[Doug Musick]

So did you get the wood pieces made and how did they work?

I just saw the post.  Last year I was wanting to make something similar for multiple uses:  jack base, to get the Jack higher if needed, parking risers in spots where the slope is more than the leveling system can accommodate, and to get the coach high higher in the air for more work room.  It's easier using these and the airbags to get about 14" of clearance and then cribbing or using the jack stands for safety.

I first just cut a treated 2 x 12 into 20" lengths (so 11.5" x 1.5" x 20" actual size). It worked a few times but the 2 x 12's split after only a few uses.

Next I tried 2" thick plywood cut 12" x 24" (so 2" x 12" by 24" actual size).  The plywood ones have worked great.  Sometimes I stack them 2 high (4") and the Newell drives up on them just fine.  I carry 8 of them with me.

My coach has 11R 24.5 tires which are narrower than those of you running 365's or 315's so you may need 14" or 18" wide blocks  but the 24" is plenty long even for my tall 11R 24.5 tires.