So I have a nice low hour 753 that leaks oil from the rear of the hyd valve. It always does a little but is way worse when cold. I looked up the parts diagram and think I found where its coming from, but would like to know how hard it is to get apart and what would need replaced. Looks like there's alot of parts and spring loaded pieces lol. And i don't see anything that looks like a seal or o-ring. If anyone can give me info on what it is and how to fix it I'd sure appreciate it!