How much do RST Razor Leathers give
 

I'm looking at a set of the RST Razor leathers.

Size wise 34" is too loose on legs etc, 32" is good on legs but tight across the front, hard to fasten the zip and pulls across my junk when I'm crouched.

Any of you guys have experience of this kit, and how much they are likely to slacken?

Thanks in advance :D