95 S10 Air Conditioning

I replaced the compressor, accumulator, and orifice tube on my 95 S10, because the old compressor pully had seperated from the compressor housing. aside from that, the AC worked great. About two days after replacing items above, the AC started blowing warmer. I checked the pressures, and they were ok, had no leaks, so I pulled the orifice tube out and found crud built up in it. I replaced it again, charged the system, and again it clew cold for about two days. Now, the thing is blowing about 80 degrees, so I am suspecting there is some more crud building up at the orifice tube. Any ideas on where the blockage could be coming from and what I can do to fix this?
Thanks in advance!

i would take all the hoses out, and get some a/c system solvent from your local parts house and blow everything out, be sure and disconnect the hose on back of the compressor, dont want to shoot compresed air thru the compressor!!!