Well ok I know I am only a teenager or like you geezer's like to call us "younge punks" but I know that you should have the kid work with you since I never got raised like that and I am still a kid so now I can tell you what your kid would tell you if you didn't let them work with you. I wish my dad did that with me but he worked a lot and couldn't work on any car's so I never really grew up doing that and wish I did so I say go for it. Don't force the kid to do it if he doesn't wan't or he'll hate it. I sometimes worked with some people fixing up some car's and trucks here and there. I used to take my go cart and dirt bike's out and take the engines completely apart and put them back together myself and get yelled at in between because of course the rent's (or parent's as you guy's call them) would think that I would mess it up. I have basically learned everything now from show's and thing's of that sort and on the net reading all about this stuff. I normally hate reading but if it deal's with hot rods, harleys, dirt bikes, choppers, street bikes, etc then I am there to read it. I would probably have gotten started earlier on learning about car's if I did grow up around the car's and all. I don't know why I am into hot rod's and all because I really didn't grow up around them or nothing but I have always liked them..... Can't explain why but did and I saw pictures of my dad's old car's and Nova's and stuff like that and liked them since. Now I am on my own... I learn everything on my own, I don't have friends here that are into rodding or dirt bike's or nothing like that so it kind of in a way suck's for me but also doesn't because I do what I like to do and that's working on engines, etc. Well sorry I got off subject a bit there but that is probably what your son would say if he doesn't stick with the shop work with you so now you get an idea and I hope that helped you some. Your a lucky bastard to have kid's working in a shop with you and all and I know your probably thinking that I am a teen and dont' know a damn thing about kid's and all but sorry to say, you would be wrong if you thought that... I am not like other teen's you might know or think of.