Injector Flush

[Joel Skousen]

This question refers to one of my 88 5TQ.   After a dose of "Guaranteed to Pass" gas treatment, this aggressive fuel system cleaner must have dislodged some built up crud (downstream of the fuel filter) because within 1/2 a tank 4 out of the 5 new injectors were partially obstructed giving a partial spray pattern.  I've got no top end power anymore (halters under load due to being too lean in several cylinders).  I was able to gain some improvement by removing the injectors and turn them upside down and tapping out the residual fuel inside them---but would like to see if there is anyway to get out the partial clogging without buying all new injectors again.   Any suggestions?  Any way to pressure flush these injectors.  The caps look crimped on, so I assume they can't be disassembled. 

Joel 
4 Audis (all I-5)