Simple way to check by pass
The simplest way to check for cylinder by pass it put a steel block by the wedge (something to keep the cylinder from bottoming out), extent the cylinder as far as you can, you should hear the oil going though your relieve valve. Take the hose off the rod end, start you motor and hold your valve in the extend position. If oil is coming out the hose your cylinder is causing the problems.
The simplest way to check for cylinder by pass it put a steel block by the wedge (something to keep the cylinder from bottoming out), extent the cylinder as far as you can, you should hear the oil going though your relieve valve. Take the hose off the rod end, start you motor and hold your valve in the extend position. If oil is coming out the hose your cylinder is causing the problems.