Was the flywheel replaced with a solid conversion kit or another DMF? If a solid conversion kit was used, get it replaced with the correct DMF clutch kit. Because of the high torque and vibration frequencies these engines produce it wont belong before your gearbox will need replacing or worst case, a snapped crank shaft. I done a lot of research regarding this as I needed to replace mine (DIY) and opted for like for like replacement (DMF type) and engine and box runs sweet as a nut. SOLID CONVERSION KITS ??????? you have been warned.
RM
February 2014