new guy with questions

[sailbode]

Greetings from North Jersey!
I have a 36v ezgo I use on my hilly property for giving grandchildren rides and wife would like to use for getting the mail and pulling a small yard cart.
My first problem is burning smells. First from the solenoid, then from the reverse switch. I have replaced both but still find the terminals on the swich getting hot. I checked my amp draw and from a dead stop 200 amps dropping to 170ish on steep hill....35ish on flat......soun normal?
Cheapest way to get more power on hills? Dont care about hi speed.
Any and all advise appreciated