I got my Early Lancaster kit from Chambers today. The first thing I did was try to fit the barrel into the barrel channel. I was expecting a drop-in fit, except for the very back of the breech. The barrel is no where close to being a drop-in. I put as much pressure as I dared to, and the barrel still would not even begin to fit in. It looks like I'll need to do some inletting along the entire length of the barrel channel. Does this sound right for a Chambers kit?