When I first got my HMF I also ordered the GYT-R filter and billet plate. Well because of a postal SNAFU I ended up getting just the HMF. So I ran it with just dropping the clip one position (still stock airbox and lid) and it ran really well with a good plug color. After I finally got my GYT-R filter setup with no lidI had to rejet it. Ended up with a 155 main and a 25 pilot jet with the C-clip back in the stock position.
Hope that helps for a starting point.