To make things even better, I am using a new product by
WabFab that is a Hi-Lift jack adapter that securely fits the tongue of the jack onto any round tubing. When I first heard of the product, I didn't really think it was that big of a deal (since I had used my jack for so long without one). But once I actually had the product in hand, and saw how it worked in person, I realized I had underestimated it's value. It's just plain cool. It makes the jack tongue very stable (I tried to shake the jack side-to-side to get the tongue to slide and it wouldn't budge), and a benefit I didn't realize until I used it is that it allows the tongue to be safely used on tubing that is very close to body sheetmetal. (see 3rd pic below). Here are a few pics that I took of the WabFab adapter...