ported 4 mil starting point for 28pwks

[volcrano]

what up-just got some 28mm pwks.they come stock with 140 mains,jjh needles a 3.5 slide and 45 pilots.where do i start?ive looked around and think that 155 main and 50 pilot is a good place.what do you think?im 500 upbove sea level and mods are as listed below-except for carbs lol.needles okay for now also or do i need others??

[JKJK]

That sounds real close.I would up the mains to 158'to start with.The JJH's are also a excellent choice for your application.You'll probably end up with 48 pilots+155 mains at around 65 deg.