Should I clean them 1st?

[tomcarman]

Hello again,
I found these in a box and will list them in the swap meet section. After searching ebay for similar carbs I see they have all been cleaned. These are "as found" after being in a box for decades. Question is should I clean them 1st or not? If I clean them how should it be done? Frankly I'm afraid I'll ruin something so I'm inclined to leave them as is. The electric fuel pump is a WALBRO model 6V WEP11.
BTW, after talking with my Brother he wants to keep any '32 parts so for those that have PM'd me about the E brake handle it's staying here. Thanks though!