Advice needed for growing TPA firm.

[MR]

I own a TPA firm that has grown from about 400 clients to almost 700 over the last 4 years. I expect there are many or you out there fortunate enought to be in a similar situation. We're still very good at what we do, but are having some difficulty managing the growth. Our structure is such that we have 13 administrators, 4 secretarial staff, 2 actuaries and my partner and me. Each administrator handles all aspects of his or her caseload and the average is about 60 plans each. We've never had any middle management and I'm not sure that's still the right approach. I am thinking of going to a "team" approach, perhaps better utilizing the strengths of each of my staff. Finding quality candidates is also tough. For those of you out there who have gone through this, what advice do you have? Are there changes you made as your business grew that really worked well? Have you created any task-oriented positions, such as a "5500-guy"? Any suggestions would be most appreciated.