It sounds like moving the antenna to the other end of the house would be better. For future reference the legs of the tripod can be moved in and out a little by lifting up or pushing down on the three metal braces in the middle of the tripod , this can help line up the feet with the roof supports under the roof. Here is a antenna mount that does not make holes in the roof.
http://www.ronard.com/34424560.html. Buy this mount at solidsignal by typing the word ronard in the solidsignal search box or buy from
http://www.ronard.com.
http://www.solidsignal.com.