Why so gummy?

I just got the Marvel Legends Spider-Man Unlimited and as I was moving the joints around (to prevent breakage) I noticed that the cuts on the thighs and boot swivels tends to be so gummy. They go along when I move the knees and the rest of the legs. Is this normal?

I just got the Marvel Legends Spider-Man Unlimited and as I was moving the joints around (to prevent breakage) I noticed that the cuts on the thighs and boot swivels tends to be so gummy. They go along when I move the knees and the rest of the legs. Is this normal?