Ideal problem
I dont know what size the stock carb is, but the New Style NT carb doesent leak when I forget to turn the gas line off, it has a good seat. I dont have trouble with the ideal, one time I had it sputter all the time, but found out the float was off, I set it at 21mm, it stoped the spitting, the new style nt carb has a bigger jet and 3mm bigger intake hole for more air, works fine with a o-ring