I will be replacing the grill element on a Zanussi ZDQ995X oven soon. I am very familiar with the process, however I have a question regarding the spade connectors. I am expecting them to be seized / corroded on to the element spades, as this oven is around 16 years old. Can i just replace them using a spade connector crimper?, (I have rewired a classic car, so more than familiar with fitting these), or do they need to be soldered on.