Hello all. I’m a newly retired Civil Engineer. I have been in construction all of my life and now I’m doing some work on my own projects now that I have time. Invested in. Komatsu Excavator PC138USLC2. I do a fair share of my own mechanical work but I’m new to the heavy equipment work. I have approximately 200 hrs of seat time in my new machine and have had to do a few repairs already. I have recently noticed the tracking of my excavator is slowing and I’m looking into why this is happening and what steps to rectify the problem.