Chafing from wetsuit

I don't surf as much as I do now due to location and when I do surf I stay in the water for a long time.
This is the wetsuit I got. http://www.surfdome.com/billabong_wetsuits_-_billabong_foil...78169
I get chafing on my neck. I also got another wetsuit, it's not as tight on the neck part but it still gives me chafing.
Any idea how I can combat this? I used to use vaseline during summer on my balls but that was with shorts.... not sure if vaseline is good with wetsuit.
This is the wetsuit I got. http://www.surfdome.com/billabong_wetsuits_-_billabong_foil...78169
I get chafing on my neck. I also got another wetsuit, it's not as tight on the neck part but it still gives me chafing.
Any idea how I can combat this? I used to use vaseline during summer on my balls but that was with shorts.... not sure if vaseline is good with wetsuit.