Hey there Paulwhite,
Sorry dont know much about your question,,,,
Its something the same as having a different / lower squish on a stroker engine me thinks.
Yea, i think it does come at a price,,,,,harder starting, bad idleing,,,,,,,thats why alot of supper bikes are pushed to get them started and going, although most of the time they take the starter off to save on weight, even formula 1 race cars have trouble starting if they stall.
Maby you need the help of our member "Karen_Agusta" with her mind full of info. Send her a PM for the crack!
Anyway best of luck with your trial-run