I just did the single spring mod... only problem is my lower vacum port is blowing air out it at idle causing a slight vacum leak... should i cap it off somehow? I know when i did the mod I followed evomotos write up and it said to match one of the holes up with the lower vacum port im wondering if this is causing the problem

 

Check and see if the rubber diafram have any rips or holes in it , sometime its hard to tell .

If it does thats causing your leak .

Ive only had one dealing with the type S and that was the cause of the leak it had .