BlackBerry App Bugs Fix

We are looking for experienced BlackBerry App developers, we own a popular website, and have had a BlackBerry App developed, it's already on App World, we have roughly 150-200 downloads per day, however, the App is a bit unstable, and a bit buggy according to our users, quite a few users have been complaining, mostly regarding connection problems, missing APN info, tunnel fail error messages, we need a highly experienced BB App developer to have a look at our App, and the source files, and fix all the major bugs once for all. The App has 2 bundle of files, one for traditional devices with keyboard, and one for touch screen devices. You must have lots of experiences in developing BlackBerry Apps in order to bid on this project. thank you