MF, even the full cranks are harder I find. This second one I have is like brand new and its a mongrel. Took at least 50 pulls the first times I used it, then have changed all the usual culprits (decomp looks good).
The way I have to start it is turn fuel tap on for 5 seconds, then turn off, throttle on run, prime 1 time then pull about 10 times.
Thinking of swapping the round disc blade onto it and see it it helps
The other one threw me on my bum one day - that was my own fault for leaving the blade off though.