I have a 2019 tl12v2 and with the skid pro brush hog attached when I lift the arms it completely robs the "hydraulic fluid" from the mower. Then when I stop lifting the hoses jump and the blade speed picks back up. Any help is appericated. It has 250 hrs and is now due for a hydraulic fluid change and filter change. But I belive it's due right at 250. Is this a valve problem or could a clogged hydraulic filter be the culprit?