Gadge, the ones I used with the decomp removed were full cranks fitted with rope pull start and I was using those probably 30 years ago, my point was to say that with very low compression they will still run ok
G'day Norm,
Just to be sure we're on the same page here, the self-retracting rope starters are what Victa always termed 'recoil starters'. The wind-up ones were 'impulse starters'.