i just bought a 1982 300sd with 186K miles. it was a pretty good deal ($1850). all the accessories work fine and there is a couple of stuff i need to work on. so i just wanted to confirm with you guys if i am on the right track. it started right up in 1 key turn in 14 F weather.

1. vacuum leak in rear door. i can hear the air when i operate the lock.

2. transmission shifts a lil hard in and out of 1st gear. i suspect it has to do with number 1?

3. it seems like there is a lack of power sometimes (like every 1 out of 5 times i take off). i thought because the trans is in the wrong gear? or i might clean the tube from the intake and try again.

4. the back rest portion of the power seats do not work. fuse?

5 car shakes at around 65 mph, and pulls to one side. alignment?

i'll probably have more questions about the car later. please tell me what u guys think might be wrong with these issues. i'd appreciate any help trying to figure these out.