Takeuchi tb025

Just purchased my first excavator. 1999 tak tb025. Got a good deal on it with certain issues so i couldnt pass it up. The pilot control valves are leaking and i was going to replace the entire assembly on both sides but i cannot seem to find the parts. Does anyone else have problem finding parts for the older takeuchi excavators? Ive talked to a local shop with no luck. If anyone can point me in the right direction it will be much appreciated.

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