Looking for a good diesel mechanic in northeast Florida close to Keystone Heights 32656. I am almost positive I need a new set of injectors. Blowing white smoke after warmup and ruff idle. I have an 04 LB7 with 75,000 mi. This will be the second set. First set replaced by dealer under warranty in 2009. Truck had same problems then. Need to find someone I can trust to do a good job of repairing truck. Suggestions please.