thanks for that, ill try getting add-on added twice, and see what happens!
BTW - the tuners i have are both PCIe and all my motherboards only have one PCIe slot. So plan is to put one tuner in HTPC (running TVHeadend under openelec ) and one in Server (running TVHeadend under ubuntu 1304).
My future plan is to get new motherboard with 2 PCIe slots for tuners. I did have a Blackgold Quad Tuner DVBS2/DVBT2 but couldn't get it working in Ubuntu (it worked fine in Window$)-
regards
Gavin