I just purchaed an 89 LT250r from someone who rides at the 1000-2000 foot elevation level. I will be riding it at the 4000-5000 foot level. I will also be adding a FMF gold pipe, and K&N filter with holes in the airbox lid. I know the quads jetting will need changing, but I am not real familiar with this process. Does anyone have any ideas on what Main to start with, what position the clip should be in, and how many turns the screw should be set at. Will the pilot need adjusting? Any starting advice would be very helpful. Also, if anyone would explain the simplest way to undergo this process that would be great.

Thanks,