I have stopped using paper most of the time I use light weight interfacing "sew in" and just leave it that way and I have found that my block are more square. I like paper piecing alot but this is the only way that I have done it in the last few years, I found it to be the best way after doing Jenny Meyers Moon Glow. Pulling the paper caused it to dissort too much and a light bulb went off and yes it does take some time to trace the pattern but I am so much happier. I hope this helps a bit for you.
Good luck and happy stitching.
Johanna S
Las Vegas, NV