lately my scag had been acting up when the mower was usied for 20 moinutes or so. it would start humming/growling on the left side and drag. sometimes the left hydro wouldnt move and the right would. if i let it sit, it will work fine for awhile. the fluid appears to be clean and full. i tried to run earlier and the left dint move or make any sound for abit then it start moving but humming/growling. dont know if this helps, but the left side gas damper keeps falling off.