*The engineer issue is likely an AI code issue with respect to priorities possibly influenced by the lack of actual steal actions or not.
*The second point may have a variety of causes that are hard to reproduce or determine. If the bot stops at the second to last node, double node-ing the deliver point should fix it. If it is related to a goal_num change while the bot is delivering it, re-enabling the steal action might help (but can't be used in the Baserace waypoints as it uses only delivers not steals).
Anyway I have
posted a modified waypoint 1.60.1 complete with Nedd3h's requested corner scoreboard. Deliver pads are mostly double node-ed (except fence pads), 3 new speakers and 2 sounds added (the latter I hope to improve with something more distinctive later). With such limited changes I have only tested the map for one evening so I consider it beta "as-is".
FYI:Above link will die come October 2009.