My hydrogear transmission developed a leak so I took it off and replaced the seals. I put it back on but the linkage between the drive lever and the hydrogear is not aligned right. In neutral it tries to go backwards. If I push forward it barely goes forward and of course it goes fine in reverse. I need to get the return to neutral screw centered but I can't move it due to the Husqvarna linkage. Manual doesn't say how to adjust the linkage. Can anyone give me some guidance?