Leerink analyst David Larsen says he is now incrementally more positive on Quality Systems's stock after attending the company's analyst day. Recurring revenue continues to rise and management is focused on growing earnings, the analyst tells investors in a research note. However, Larsen believes Quality Systems still faces "significant attrition" of its core base, and is worried that Q1 bookings may disappoint. The analyst reiterates a Market Perform rating and $16 price target on the shares as he waits to see more turn-around traction before getting more positive.