So I personally am unable to properly do an engine run up in this aircraft. Haven't been able to since it was released, and it's a real bummer. The plane creeps at 2300 RPM, and shoots forward when checking for RPM drops. When the ground is a little wet from rain, the plane rolls forward uncontrollably, and accelerates beyond 30 MPH. Someone from A2A, I think it might have been Scott, said this is just one of those limitations with FSX that hold the developers back.
Here's a suggestion I'd like to throw out there though. Take the A2A Accusimmed Spit for example. There's an option available to be able to have a few dudes out there to hold the tail down during the run up.
So would it be possible for the parking brakes to be operated independently from FSX, and completely halt the aircraft during the run up - similar to holding down the tail in the Spitfire?
If the parking brakes cannot be fixed, maybe there is a work around option.
Well, I'm not really sure what you mean with the plane "shooting forward" when doing Mag Checks? Can you explain this a bit further?
Creeping is definitely (unfortunately) a limitation of FSX which is not easy to overcome. I never see something else than creeping, with or without chocks, with pedal braking or with parking brake. Wet surface again is something that is limited by FSX and its special way of calculating friction coefficients.
The idea about using ground crew - as used on the Spit - is not comparable. You will never use Ground Crew to HOLD an A/C against its engine power. On the Spit ground crew is solely used to hold the tail down inorder to prevent a prop strike as the elevator force is not enough to keep the tail down at higher engine regimes when the wheels are locked or chocked.
Maybe there is a workaround for the creeping tendency but I'm sure it would have adverse effects on many other items. To a certain degree we have to live with FSX limitations - whether we like it or not. I'm sure A2A will proveide a solution in the mid or long term - but only if we can make sure there are no adverse effects.