Hi All, I just picked up a 2000 773G in good shape, needs a few things. It's been repainted and the best I can tell is the front aux ports have probably never been used. What is the best way to test the aux hydraulics? I do have hydro pressure gauges. That'd tell me if I have the correct pressure, but not sure how well it'd tell me if the controls work. The service manual is a bit light on diagnostics. I don't yet have any need to rent or buy an attachment. Though in my area bedrock isn't far down and I'd love to get a hammer attachment to improve drainage where the backhoe just scraped bedrock... that's a bit pricey... especially if aux don't work. Just curious if anyone has a good trick how to verify that the untested aux works or not, without spending too much. Thanks!