Hello: Need the best advice this group has to offer. It's my 84 Reliant with 2.2 carb with fuel solenoid. Several months ago, after running so smoothly, it began running like crap. Was told it was carb. Had carb rebuilt; same problem. Traced to vacuum leak at the very front of the carb. Put another carb on, nothing! Put another carb on, same problem. Would not idle smooth. Tests showed a vacuum leak at the front of the base of carb. Took carb off examined base, installed new base gasket; no resolution of the problem. One person said it could be a warped intake manifold. Seems unlikely that 2 different carbs would have worn base plates, but no problems like this previously. This car ran so smooth and quiet. Hard to figure out what could have happened. Help is appreciated!