Hi Alan
I've got this running in P3Dv4.5
The parkingbrake leaver is to the right when brakes are on (I don't know if this is correct or not).
Undercarriage lever is down when undercarriage down
Engine start buttons don't seem to stick
A white mark would be useful, tool tips does say which is selected (1,2 or off), but I imagine some don't like that being on for immersion reasons.
Doesn't seem to be a hole in the wing on the p3d model
I remember having this problem before. I think it was something to do with locking the two fuel cocks (with the middle mouse click) after turning to number 2 tanks. I was using a mouse with a fancy middle button and I could never start the engines (this was back when I was using FSX:SE with the Lancaster). I borrowed a really cheap standard mouse and the middle click on that would activate the cocks. It's hard to know if that will be the problem for you as there doesn't seem to be any sound or visual indicator that the cocks are locked, which would be helpful.
I've just tried 3 different mice in p3dv4 (including the one I used to have problems with) and they all seem to work (pressing manual start and then trying to start up), but can't say whether that is due to p3d or something else as I have a different system entirely now.
I remember a post on the old forum having similar issues with the middle click of the cocks [http://forum.justflight.com/forum_posts.asp?TID=32497&title=ah-lancaster-cold-start-12-port-wont-start](link url)
If your props are turning, but the engines aren't catching it might be that.
7-10 - I haven't tried to use the autopilot or fuel system or guns.
Hope that's of some help.