2A3 to 300B

[vetmed]

Some time ago I changed my 300B Paramounts to 2A3 and there used to be instructions on how to accomplish this. Now I would like to go back to 300b version and presumably it is simply a matter of undoing the instructions that I followed before, are these instructions still available? Also I can't seem to find the assembly instruction disc with which I am sure I could figure it out : Thanks for any help.

Robert Lees