Although my sig. pic. is my earlier 03 Hemi. I now own a 08 6.7 dually.Bought it used with 26k on her,yep older couple traded it in. I too had the deletes done except for the egr cooler stuff which my XRT Pro tuner takes care of as well.I recently had a new water pump put on at 45k but all good still under warranty.The tech said they were problematic in later 07 and early 08.I bought a new 2012 Primetime Crusader 320 probably tips the scales loaded at 12k.She absolutely pulls it with NO problems.Up in the mountains in Pa. this past summer in tow/hual mode,exhuast brake on,let me tell ya,that alone will convince you! Just my humble opinion.
Look at the Montana's.Seems everyone and his sister's mother owns one.They were the number one seller again. No I don't own one nor do I plan to in the near future nor do I work for them.Just saying that's all.
Make sure the line(s) are purged of any air.Especially if you are starting on a new tank.The instructions will tell you to cycle the on/off button until the auto switch light stays lit.I found lighting the stove first for a few seconds after switching to a new tank insures all air has been purged from the line.