lol jesus.. how much are you kids editing? Let's just say this:
1. No large scale editing.. like deleting a mountain.
2. Trenches/underground/doing small touches around the track is perfectly fine.
I should be more specific. I'll feel terrible if you guys changed a lot and really didn't have a problem in the first place. Actually, think of it this way.. you're getting a haircut.. I don't want you to take it to the scalp but nothing wrong with a trim.
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)