While digging up a stump with my 555E the boom stuck to the left got off had a look and noting was keeping the lever from going down but the plunger on the valve bank wasnt going down so I spent the day taking off the valve bank ointhead I hammered out the plunger Now I know that was wrong but I did it there was some metal framments making it stick and scaring from me forcing it out. I took it to the local hydrolic shop and he said it didnt look like pump parts but he thought it came from a cylinder. He repaired the valve bank for a small fee of $1080.00 and said I need to bleed down the hydrolics and take the cylinders off find the bad one and bring it to him. What do yall think did I get screwed on the repair? Any advice on which cylinder to start with the one he rebuilt allows the boom to swing right.