I recently purchased a 1969 Case 580CK backhoe and am having trouble trying to dig with it. It very possible that its me not really knowing what I am doing. I decided to watch backhoe videos on line to get started. Every video that I watched showed the operator using the boom and the dipper together in order to dig. My problem is that if I use the dipper the boom stops moving and if I start to use the boom the dipper stops moving. Am I doing something wrong? The operators guide for the 580ck says that you shouldn't dig with the boom for some reason. How can you dig a nice level footing if you can only swing the dipper and the bucket? You will always get an arched hole. I checked all the fluids and the are at the correct level. Any advice? I have the controls on the machine that has an individual lever for each function one for boom, one for dipper, one fro bucket, and two for outriggers BTW.