I just purchased a nice 270 and would like to ask a few questions. The serial number is just barely visible do you guys engrave this back on the bolt or just let it wear off. This will be a hunting gun so in the future you want be able to distinguish the numbers. Second question is what type of rear sight came on this gun and where can I find one. The last question is the leather strap is ate up with green rust. Especially the buckles. How do you clean this up? Going out of town for the weekend to deer hunt so thanks in advance for your replies. Thanks Rick