The wiper ARMS are removed by depressing a small stainless tab toward the center of the shaft and then pulling the hub straight up in alignment with the center of the shaft.
It is hard to see, I think it is facing in the direction of the blade. Look very closely to find it. Once the little is depressed you can wiggle the base of the arm, pull gently and it will come off. Do not pull it without depressing the lock first.
Up front seal everything so that ALL air entering the front of the car has to go through the radiator. At the top of the radiator before putting the top panel on use foam to block off all spaces so that air cannot go over the radiator and then behind it. See the article on Mangusta International for details.
Try to find a shop that has a computer alignment machine with two towers as described in the article on MangustaInternational.com. They have to align the rear wheels first and then the front. A good technician will know what to do. Show them the description described above.
4.Your gold paint may not be like the paint on the prototype. The prototype was a different car altogether although it looked to most people like the later production version of the Mangusta. You might be able to get a color content reading at a paint supply with a computer if there is enough surface to measure.