cheers john great input,i use the 170 with a 100watt bulb i guess you cud up the power on the 140,il probably stick with mounting my 170 as u recomend saves on the extra cost as well [bANNED TEXT],if i have problems il go down a little im on the west coast of wales we get the same winds lol those north westerlys sure like to push dont they [bANNED TEXT] lol!!!