I had the carb's re-jetted on my Rosso Dino car and it transformed it for the fuel starvation issue. It's now much improved and only sometimes noticeable on tighter bends when the engine is hot. It's a very worthwhile improvement. I believe you need to re-set the float levels in the carb's as well.
I've run the optional Campagnolo wheels on my first Dino for over a year and have now taken them off and reverted back to the standard Cromodoras. The Campy's increase the weight of the steering slightly through corners due to the extra width. I have the set of 5 totally undamaged wheels going spare if you are interested plus the Campagnolo centre caps?
Current: F50, 246 GT (x 2), 246 GTS
Past: 360M, F430 spider, 430 Scuderia, California (x 2), 458 Italia (x 2), 458 spider, 246 GT