I have had an employee who has pros and cons. Pros: loyal, frequently willing to go above and beyond to get things done, good personality and good rapport with clients. Cons: occasionally unreliable, prone to errors so work always has to be double checked, slow. I hired another employee and it seems like the more the second employee does, the less the first employee does. So, some days it feels like I have two people doing the same amount of work at the same pace as one employee, which is really frustrating. Any thoughts?