Hydraulic leak - can't find the source

[wslade2]

Then it probably is mains actuator. Give us tips and tricks for pulling that. I have had it in my mind to prophylactically pull and overhaul mine.

But two other things (I'm sure you looked at): Brake system also uses hydraulic fluid and has flexible lines at pilot left foot and near rear passengers hip that won't last forever, could crack and leak. These areas could flow into belly. You are D model, so "power pack" (more properly control pack since engine driven pump powers things) has a hydraulic fluid catch tray under it and drain tube runs loosely into belly. Be sure "power pack" not leaking.