Westinghouse Saturn 4U603W, problem with Elements and powerpoints ?

Hi
We have a Westinhouse Saturn free standing electric oven, and we are having problems with the elements, they are not going to the right tempeture if we turn the temp down it says at the hottest temp, it does not seem to adjust at all. Do i just need to replace elements? or is there more?

We are also having problems with the powerpoints where they are not going any more, :/

Are these problems fixable?

PLEASE HELP

Beryl, New Zealand :)
March 2011