sfrye5853,
My name is David Lewis and I work for Progress Mfg. We manufacture the Equal-i-zer hitches, and also the Fastway trailer products.
I noticed your thread about chocks for a trailer with an extended wheel base and thought I'd just pass along this link. I don't want to intrude on your discussion, so please pardon me. Just wanted to offer an option that might be helpful for you.
Here is a link to our ONEstep chock. It comes in an XL model that was designed for trailers with the newer extended axles.
Fastway Trailer Products - Fastway ONEstep Tandem Axle Chock
Again, pardon the intrusion - just wanted to let you know about them as an option that might be helpful.
~Dave Lewis
Utah