Not actually being and seeing it, I can only speculate. But it sounds like you've done it all right. Now, take it on the road and see how it handles. Drive it 5 or 10 miles and then pull over, re-adjust those chain links and make them 5 links. See if there is an improvement, or not in the handling of the steering, bouncing, overall, how does it feel. If it feels better, then after another 5 or 10 minutes, adjust the chain one more link, 4 now. Drive it. Improved or not!
The real test is night driving when towing. Do your headlights aim for the trees, or only 1 foot in front of the tow vehicle. If you can adjust the chains so you notice no difference in the angle of the head lights on the road, then you've got a pretty good fit going on.
Do the fine adjustments with the chain links now. That can only be done by actually towing it.
Good luck!
