Quote: Here is something to think about. A straight peice of alluminum tubing. You can walk around and push ceiling tiles out of position and even slide boxes off the top shelf with it. Now take it and put the slightest bend in the tubing. Go back and try to do the things you tried before. You can't the bend just get's worse.
Here is something else to think about... The forces being applied to that slight bend are now where near enough to bend a 1.625 .120 wall tube, but they are strong enough to bend the sheet metal spring hanger mount. Keep in mind that this aspect of the sub-frame connector also is working in conjunction with the spring hanger structure that is already there from the factory.
