Greg G. Jim W. Scott L. Ed HAM 3 now has the housings and crossbeams installed. We used the spacers between the base clamp and the crossbeam this time and it worked really well, much better on the clearances. So well that HAM 2 should probably be retro-fitted with them.
We (Apollo Scott, Devil Ed & Myself) retrofitted the HAM2 with the Clamp Spacers to raise the foot in the housing.