The only problem I've had is eventually the tensioning rod slips when getting the belt fairly snug, but not quite as snug as one would like. Ended up replacing the rod itself; not the whole unit.
1991 300-SEL - Model 126
M103 - SOHC
James Madison - Oppressors can tyrannize only when they achieve a standing army, an enslaved press, and a disarmed populace.
Liberty Firearms Training - After years of trying to regulate California criminals with a never ending stream of gun control laws they have still not given up with the belief that if they make something a crime that criminals will miraculously start obeying the law.