Clocks at Stratix 2Gx

Hi!

I have the stratix 2 gx chip. In my development card, quad 2 connected only to one clock. Since I want to use two transmiters (both of them at quad 2), I am missing a clock (to connect to pll_inclk). The quartus does not allow me to connect the transmitters to the same clock (problem of fan out). I tried to connect the tx_clkout (the clock wich transmiter pl locked to) of one of the transmiters to the pll_inclk of the other' and got an eror massage (some thing about that pll_inclk must be connected to input pin:confused: ). Help me :) !