Is the picture on the link wrong then? In the picture there doesn't seem to be any reduction of diameter along it's length, so either it is 2" OD for the whole length which means it won't fit over top of the 3.5" pole, or it has a 3.5" ID and the slimline dish won't be able to fit on top of it? Edit/ OK now I think I see how it's supposed to work, I was confused by it at first. You are supposed to slip the wall of the 3.5" pipe up into the slot on the bottom of this adapter and then tighten the bolts down to clamp it in place. http://www.satpro.tv/images/qpa2-200wb.jpg That makes a lot more sense. This may be the best solution yet. Although I think it might be better to drill the two tapped holes all the way through both this adapter and the 3.5" pipe and put a nut on the outside rather than just tightening the bolts up against the side of the 3.5" pipe, don't you? Heck, that might even be the part I have sitting at home. I assume it can also slip completely overtop the 1-5/8" pole and mount to the outside of it as well? That's the one I have at home that I got for free off Craigslist with the Slimline dish I installed at my deer cabin (using a J mount and monopoles so I don't have any issues there). As far as I can tell this adapter is a DirecTV approved mounting solution. I'm not trying to do anything the wrong way, I'm trying to fix an install that was previously done the wrong way by a certified DirecTV tech. If you want to come down and dig the old pole out for me I would be glad to replace it with a smaller pole. If it's anything like the clotheslines the farmer put in the concrete is about 3 foot in diameter and about 6 foot deep.