i have to replace bulkheads, anything i should check/lube?

[blueb8llz]

nah i dont plan on upgrading the diff or diff cases. thanks for the input tho. i just need to know if i should bother opening up the case and if so, is there a proper way to lube it? can i just add the team associated stealth diff lube along with the lube thats already in the case, or should i clean out all the lube that came with the truck first?