[boz]

I think I might have a workaround for you, but I'm not sure as I've never tried it exactly. However, I have inverted a pole-end mount on a HH motor like yours, and it did work fine.

It appears the dish mount is made to mount at the end of a pole, so it doesn't have any offset from the pole to allow the dish to clear. So to get around this, you need to place the dish mount on the end of the motor shaft, except inverted from how you have it now. The problem with this is that the mount will not adjust to enough negative elevation to work and you would run across the same clearance problem.

I think if you take the shaft off the motor, and rotate it by 180 degrees, and then put the dish mount on the end, again inverted, and put the dish on the mount non-inverted, you'll find enough clearance to make it all work.

The motor shaft being oriented down and away from the pole and having the mount inverted at the end, will push the dish out away from the motor housing. Then you'll have to calculate a new dish angle, but it can be done. Of course, if you are really precise with the motor angle, and have a good true-south sat, you can adjust the dish angle by trial-and-error.

I'm just not sure that the shaft can be rotated. I've removed the shaft from one before to facilitate mounting, but I've never tried turning it around.

What have you got to lose?