I just realized from reading other posts that when I uncorked my Pig a couple weeks ago I left the stock needle seat in there. I did this because the needle I purchased, part #16012-mbn-641, didn't come with a new one. Sounds like you other guys with this part also got the corresponding needle seat. Is the needle seat sort of look like a thimble, with a hole in the middle for the main? I think that is the part...The needle came in a sealed Honda bag with just the needle and clip, nothing else. I've taken her out for a brief ride and it seemed fine, but I still need to really stretch her legs. Do you guys think the performance suffer with the stock seat in there, or could it hurt anything?