My 150 came without dogs. I added them as a spare part after some times. Big improvement. The engine is small, though, you can't pry on the dogs like its bigger sisters, it would stall/make it slip. But they help to stabilize the saw and keep it cutting consistently. If not, the tank's seem protrudes and touches first the bark, tending to rotate the saw sideway and jam the chain.
The oiler issue is annoying, but the oil quantity is plenty (when it works). The main problem for the oiling is that this baby saw doesn't manage well the chips. The 200 has the same issue, but not as strong as the 150. The sprocket is encased very deeply in the housing and the chips doesn't have a straight path to live the chain and flow out. Often, you get more chips coming out on the top of the bar (circling around the sprocket) than at the bottom. The sprocket's case and the bar's groove are flooded with debris. That slows down the engine a little and the oiler can't no more push strong enough the oil to blow out the debris. You have to run it at full speed in air for some seconds to clear the jam and get the oil again. I hate that full speed part.