1999 Scrambler 400 4×4 clutch removal h

My crank seized up and I’m pretty sure I need to replace the crank bearings but I’m having trouble removing the clutch assembly. I have a homemade clutch puller which I got the idea from this forum but the assembly will not budge loose its like its stuck on something. I’ve watched videos and read some threads but no one has mentioned this problem and I really need some help.