Hi i have been to call out today had a stone cold drier on upright foster freezer single door, capillary tube first 2 bends iced up, pressure on suction after installing line tap valve in to vacuum 4 inches, temp on evap -10 , air temp in cabinet -6 , looks like drier restricted or capillary , but iam not sure whether it,s not short of gas a bit tricky . what you guys think please help as i stragle big time recently...