Do you mean having a hard time removing the seal? I've probably replaced hundreds of seals over the years. It seems like I borrowed someones overpriced Snap-on seal removal tool once on a particularly stubborn one and it didnt work any better than a screwdriver. Maybe there's a better way, but what I usually do is let a screwdriver sit on the lip of the crankshaft at a 90 degree angle from the seal surface, aim it slightly above where the seal makes contact with the shaft, and tap it in with a small hammer, trying to be careful not to score the crank surface. Then push the driver handle toward the block. The sharp part of the blade is usually back behind the seal catching on the metal part while the duller part of the driver pivots on the crank surface and the other end leverages on the outside of the seal or housing. This usually creates enough pressure to pop the seal out. Sometimes you have to change the angle of the driver.
I am always worried I'm jacking up the seal surface on the shaft but never seems to. The crankshaft is hard stuff. But it can still be scratched so exercise caution.
Pull the whole aluminum seal housing. Pull the two studs going through the oil pan, pull the 6 bolts on the face of the seal housing. then clean up everything, install new seal. Instead of the studs that go through the oil pan, install two new bolts.
One other trick I have done is use 2 or three small machine screws, drill hole the proper size for the screw, then after screwing in the small screw, I pry on the screw with a toe and heal bar.
