Fontana is still good,they fixed what SOS screwed up.They were also good about working my drivers in cause there were very busy when they were out there.I don't wanna get into a long explaination,however if ya have a Freightliner M2 with the Mercedes engine and you smell heavy fuel but you can't find a leak,it may very well be the lines going into the injectors.There's a cover that stops the fuel from pooling on the ground,this is only in the Mercedes engine and after tighing and clean the fuel off the engine i was out about 300$ and a couple hours of my drivers time.That was at NBTC,the other symtom or lack of one was the trk run fine.