hi the knob and spindle is just a push fit but you must turn the spindle/knob till it lines up with the potenciometer on the pc board, try useing a torch to see down the hole line it up and push it in it will click in,i have done it many times. take your time dont rush it just feel for the position gently, all the best let me know how youget on bobby rob.
bobby rob
May 2006