Speedbird25

Hi I have been using the Baron and King Air aircraft for many months now and always use my Honeycomb yoke and throttle hardware to start these aircraft from cold/dark. However, now, the plane initially starts ok, but when I switch the magneto switch back to both the engines stop. I have tried various things to remedy this ie following the check list, but to no avail. If I start the fight at the runway the engines run perfectly. getting a bit frustrated with this, so would appreciate any help.

where can I grt this new dll?