Sat 129 w

[poncholo]

Hi guys I live south of border I was able to get sat 129w what I dont understand is why around noon i have 95 percent of the signal acquired and in the evening around 8 pm I completely lost all xpondrers, currently I have a 2 sat configuration 119w and 129w do I need the 3 sats in order not loose the 129w at night or what is wrong with this dam bird.

I have checked and rechecked the dish which by the way is a 6'4 dish.

any help or comment it is greatly aprecciated.

thanks