Cablevision chmn Chuck Dolan has made another move at the company’s chess board, telling his board of directors that he plans to propose that the board reduce from 15 members from 12. Dolan said he’ll raise the matter at the MSO’s April 18 board meeting. The announcement came in a Mar 29 letter that was attached to an SEC filing Thurs. The percentage of the board that the CVC patriarch has the right to name remains constant at 75%. All of which, of course, can be seen as further maneuvering on Dolan’s part as the final day of Voom’s grace period came and went. CVC did not comment on what transpired in Bethpage yesterday, although Bear Stearns analyst Raymond Lee Katz said that Dolan’s petition with the FCC to reject a potential sale of a Voom satellite to EchoStar (Cfax 3/30) "would strain the relationship between the CEO and the other board members and would result in the termination of … Voom … in the near future." Meanwhile, Vintage Research analyst William Kidd added that his firm believes the FCC "will not support Dolan’s position, which should effectively end Voom." Cablevision shares fell 10 cents to close at $28.05. — Just to set make sure there was no confusion, Cablevision and Rainbow DBS counsel fired off a letter to the FCC this week, noting that Daddy Dolan’s petition to stop the EchoStar deal was done without authorization by either business. Furthermore, they plan to comment on Dolan’s arguments-"which are without merit"-by Apr 12.