Update. I just removed the line going to/ from condenser, could blow through it with a bit of restriction but fine. (as the passages in the condenser are small), removed the High press. line from condenser to R/D, it was fine. Removed the R/D with no lines attached and human air pressure COULD NOT blow through R/D. I assume that is my culprit/ problem. Please pass judgment if you would on my diagnosis.

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1996 E300D
1996 E320 Wagon 4MATIC
2003 Jetta TDI- GLS, 5-spd
1997 Passat TDI
2002 F350 Crew cab 4x4 Powerstroke
Jacobsen HR 15' cut ZTR w/ 80 HP Perkins diesel
Hustler 6' front deck with 28HP Kubota diesel