Re: valve slippage leaking seals
slow leak down, in my experience (I've not experienced the expensive German components) is normal. Even the 1:1 machines have slow leak down.
My wheeled loader, the minute I shut er off, & walk away, the bucket slowly starts to bleed off. Same goes for the RC4WD 4200 XL that I use to own.
As to the oil leak, there shouldn't be any leakage where the servo connects to the valve body.
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