Bradley's movement is different.

Bradley has very different movement in custom pathing. it stops and starts all the time, every few meters. And also turns around on the same spot a lot, with a bit of roll back or it can slide sideways a little bit. not much but it slightly alters it's coarse which gets it stuck in narrower areas. 

MonumentBradley.txt

Ok so your having a issue with custom pathing or with the default pathing? send me your Water treatment V1  file ill look att he path and what it is doing.