comment. still inexplicably leaving some P&R's disconnected.
Revert "comment. still inexplicably leaving some P&R's disconnected."

This reverts commit 9329db72500bb3d9e308f71ce4092a6bd7fe5078.
Revert "New way of doing intersections."

This reverts commit 418c43fa0b0d1eaf4815fe4a3fa97c7452a18fa4.
really fix 1605.