I'm hoping the new Vspecs coming out will be more durable. Never seen any of them last half as long as a good RB or NR mill. 4gallons tops.

But damn they are nice to tune when they're a 1-3 gallon old. Perfect idle and midrange. The closest I've gotton to OS tuneability was a NR FMS and RB WS7III with OS P3 and P5 plugs in them. Maybe I'm better at tuning Italian 7 ports, compared to the +4 or N21b, for example.

Maybe it's OS's glow plugs that make thier engines so good (when new). I know that running only OS plugs in my Italian mills isn't the best idea ever. But it works way better than NR and O'd plugs thats for sure.