Differential seal question

[Tanker]

Normally always get laughed at/argument started but I always seal diffs with loctite 515 (there is a permatex equivalent but cant remember the number). Works fkn mint and cant say ive ever had one leak (tri drives included).
Are your cones solid or do they have a slit in them? Multi grips, small hammer and small flat blade screw driver make getting the ones with slits out easier.. I slam the axle with a sledge hammer to pop it out a little/break the seal first. Once its out a bit it makes getting the cones out alot easier. Also if its a available, an oxy.. never underestimate what a little bit of heat can do to seized parts.