minitiouner v2 carrier lock

hi.
I am using the minitiouner v2 with a green 2 channel octogon lnb with 100cm offset dish. my problem is that the carrier lock fluctuates between 40% and 50%, and then drops to zero, then back to 40% to 50%. This results in video stopping, can anyone give me an idea as to what is going on please and how to fix it. thanks
I am using the minitiouner v2 with a green 2 channel octogon lnb with 100cm offset dish. my problem is that the carrier lock fluctuates between 40% and 50%, and then drops to zero, then back to 40% to 50%. This results in video stopping, can anyone give me an idea as to what is going on please and how to fix it. thanks