I'm in need of a gunsmith that is familiar with making stock alterations on a sporting clays gun. Specifically cutting the stock down to shorten length of pull and creating some spacers to lengthen it back in the future, as it is to fit a growing 13 year old. Someone with gunfitting experience in the clay sports would be great. The gun is a Beretta A400 Xcel without the kick-off. Thanks in advance for any replies.