I just had the hard lines for the swing motor off of the machine so I could reverse the flow. I reassembled machine and after a few minutes run time I was noticing that my swing was low on power. It was dark so I went to track machine back to shop but had almost no power to left track or really any other function other than right travel motor. My first thought is that I've got some debris stuck in the main relief of the left spool bank, just want other opinions? thank you Don.
Your right the first thing to check would be your relief on the left valve bank. Your bucket and thumb should also be good as they are on the right valve bank. Of course this is on single operation not combined.