Adding a fourth LNB to a CNX Mini

[spazm]

I am wondering how is the best way to add another LNB to my dishpro 1000 dish. I have 3 lnbs on ther now, DPP Twin LNBF and a DP Dual LNBF The dual attaches directly into the twin and has the switch inside of that. So if I add another LNB to get 91deg sat how would I do that. I have a switch that came with my CNX Mini but am not presently using it. I didn't know if I could use one of the inputs for the setup now and input 2 for the 4th lnb. Also which is the best position for the new lnb on this sat. to the left or right of what is there now?
Thanks for all the help
Spazm