yep, looks like the grain thing didn't pan out for you.

you probably have considered that since the problem got worse that you were going through a detoxification, so the grains may still yet prove to be a contributor to the problem.

the standard hulda clark kidney cleanse is posted here
http://curezone.com/cleanse/kidney/default.asp

for longstanding problems a single cleanse is most likely not enough. you mentioned you have done all the other cleanses. it sounds like what you want is more of a lifestyle change than discrete cleanses.

i can probably decipher your odor problem given enough time and information. but thoroughness is not the curezone way.

have you tried drinking home made green juices. wheatgrass or any green juice containing  chlorophyl is a natural deodorizer. this will help to deodorize the small and large intestine. 
 

the person who mentioned that you were detoxifying through the sweat glands is most likely correct.  when the other channels of detoxification are blocked , kidney, liver and gall bladder, bowel, the next best thing is the sweat glands. if you have a long history of constipation then it is a good bet that you will require an extended period of bowel cleansing.

is there any relation between odor and your sulfur intake. 

there is a relationship between schizophrenia and an onion body odor. this may provide some clues metabolically as to what is going on.

have you successfully restored bile flow through the liver cleansing or just completed some liver flushes. it doesn't much matter if you do 1000 liver flushes unless your bile flow is restored.

few more ideas...

charcoal or bentonite clay internally, sauna, ayurvedic constitutional diet, blood type diet, optimal diet (google  jan kwasniewski -- this will be antithetical to someone who was a vegan, but there is a vegetarian version of this diet and it can address the kidneys, bowel and liver and entire metabolic problem), or maybe the vegan diet was good for you, not sure what you feel best on.

i was able to pass a kidney stone without doing any particular cleanse by just following the ayurvedic constitutional diet for pitta. i got so relaxed that the thing just passed.