Retractable Landing Gear Design and Material

[Malish]

Does the engine pull up...a degree or so ?

I don't have this information, but doesn't look like(Yak-7, 9 and Yak-3 are differ only by engine modifications, weapons and airframe material construction):

 

[Sraight'nlevel]

The picture was glued together from four A4s so it was a bit corrupt.