Manuall deleted BBM to get more RAM on the 9900 now that I have a Classic I want to use BBM

I manually deleted BBM to gain additional RAM for my 9900, now that I have a Classic as my basic mobile device, I want to use the 9900 as a 2nd device with BBM. Since I manually deleted the files BBW will not allow another install. I can I override and install BBM back I am willing to wipe this if necessary.

Anyone?