Anytime fillsfan!
Just let me know if I can help in anyway. I will say this, and I mean no disrespect to your son's coaches if they actually have someone there working with the catchers, but let him know that if he really wants to get better at this stuff, to set aside some time in between class, practice and games to head to the field or practice facility and work on this stuff by himself or with a couple of the other catchers.
There's no guarantee the program has a coach there who specializes in the position or that there is even time set aside for the catchers to get a decent amount of work in. I remember that being a point of frustration for me my first couple years of college.