Ouch! bashing the PPK/S on the Walther forum?!? But seriously, my personal experience with my one PPK/S has been very good. After a shortt break in period, maybe 100-150 rounds, it has run flawlessly. It is very accurate and I don't think the recoil is that bad for a gun of it's size. Have you shout a j-frame with +P ammo? I think the slide bite has to do with how the gun is gripped. Move the tip of the thumb on the strong hand down so it touches the tip of the middle finger on the strong hand. Hard to explain, even harder to photograph, but easy to do.
Ammo is so much better for the 380, I feel comfortable with mine.
Just one man's opinion!