watch for AvA matchups that feature the P-40E.. allows you teh chance to face opponents on a little more equitable grounds in terms of planes.
ditto for SEA events that feature it.
or find someone - another p-40, or similar opponent and use the DA for 1 v 1 action to wrack teh plane around and find your comfort zone.
or find a wingy and tear up furball lake (or the MA)
The thing is, unless you fly and push it to your limits, you'll not learn the full potential and limitations, for any ride for that matter.