Does a 24V have a fuel heater/strainer? Think about deleting the heater before you go for professional help.
It's a long drive for you, but if you don't get a better recommendation at home, I can't say enough good things about King's Auto Service in Bradenton. They do all the work on my 5 school busses, a motor coach, and ~18 gas-burning vehicles at my job. They've probably done $75K+ in repairs for me in the last year and have been correct in their diagnosis and repair in all cases but one. And that one was pretty wacky - a piece of plastic wrap had gotten inside the engine and blocked an oil passage... 941-812-4900 Tell them Kevin from IMG sent you.
$75K in repairs: the fleet is pretty old, the company had neglected it terribly and the previous mechanics my employers used before I got here left a lot to be desired. There was a LOT of fixing needed!! In my 30 years professional experience in auto repair, auto manufacturing, and fleet management, I have found VERY, VERY FEW totally trustworthy & capable shops. Kings is one of them.