[Roughgem]

Well..... I've removed the unit under the dash and cleaned out the core area. I've dismantled the brass assembly which I believe is the expansion valve. After removing the inner nut and spring assembly I'm able to blow air through the body of the brass assembly both ways. Would this constitute an open valve? Or is the ability to blow air through the assembly not right. (My original problem was high pressure on low side with no cooling through the core. The tube running into the dryer would be cold so I assume the restriction at the dryer acted as an expansion valve of sorts.)
Any help would be appreciated.
David