I bought a 2000 GMC 6.5 diesel with a two tank svo conversion. I made it about 1200 miles on used veg oil then it started surging and stalling. I was able to make it another 1000 miles on deisel before that stopped working as well. I took the truck to a local mechanic that had no svo experience. He found jellied veg oil in the diesel tank and was able to clean it out and get it running on diesel, but he doesn't have the know how to get the veg oil system working. So I am looking for someone in Colorado or surrounding area to help me get the veg system working. I am willing to pay and any suggestions or help is greatly appreciated.