I am running a side draft Dellorto 48 on my 12a & it is has two lines that pump a small amount of oil into the carb. After being out for a drive, there is a small pool of oil under the carb where Mazda12a is stamped on the engine.I have tried to watch for it by reving the engine while parked. Is there any way to adjust the oil pressure that is going to the carb?I am running the engine with open velocity stacks.