What would the symptoms be....

[smegballs]

of broken/snapped reeds on an Rxs?

The thing died about 3 miles from home, started misfiring then died.

Its got spark, fuel and compression.

When kicked it will sort of half heartedly run but sounds like its firing only just enough to stop stalling and opening the throttle will make it bog and then stall.

As soon as any load is on the engine it stalls.

[The Artist]

So are they broken or not?

If it has spark, fuel and compression and it doesn't run, 99% of the time, it will be that the fuel is not correct for some reason. e.g. mixture.

Check the reeds, while your at it, clean the carb and air filter and put a new plug in.

[smegballs]