turf tiger hydro problems

[wahlturfcare]

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.

[Restrorob]

Sounds like the system may be sucking air, Check all hose connector fittings for tightness. Dirt build-up around fittings is a sign of leakage.

[wahlturfcare]

today i found alot of fillings in the resovoir tank by using a magnet. I was told that the right side should be okay since it hits the filter first. would this be correct? im planing on flushing the whole system too.