I just picked up a used L4330 with GST and 5200 hrs. I noticed the glide shifting was a bit jerky and sometimes delayed in certain gears. 3rd and 7th gear would not change speeds when selected from 2nd or 6th. I thought that maybe fresh fluids might help. I have changed all of the fluids/filters with kubota fluids. I used Super UDT2 for hydraulics. I have only put about 25 minutes on it since the change, but shifting is still jerky and occasionally delayed. Thoughts?