I will be embarking on an 8K+ mile trip towing my travel trailer in the near future. I have an appointment at the dealership for an oil change (3rd one) as I have 25K miles. I will have them replace the air filter as last time they said it was getting dirty. (visually looked ok to me). Will have them replace fuel filter as I am still using original. Truck just had 1st birthday. I am considering getting the tranny flash as I do have the symptoms listed in the tech bulletin and notice the tow/haul is s/b better performance with the flash. My concern is don't fix what is not broken. I have never received any flash updates since I own the truck. Do you think I should leave well enough alone or have them flash me up to date?