How hard is it to replace the timing cover gaskets? I am leaking coolant and need to replace the gaskets. Is there any write ups? I can not see any but maybe I'm using the wrong search criteria?? Lastly does the sump need to come off like I believe it does with a VN? I'm pretty sure some things changed from early to late Buick just not sure what. If the sump needs to come off then I have another couple of questions. I have a Max Ellery but it is useless, doesn't even have serpentine belt pattern for the Buick, yet has one for the Eco... I just don't want to start tearing it down and find myself stuck halfway through and needing a tow truck to a mech because something like the sump needs to come off or something like the balance shaft needs replacing.