This was done on a 400cc single but it works on twins and 4 cyl's as well. Clean your cylinder and get as much oil out as possible and freeze your new sleeve or sleeves.
Use an oven to heat to 450 deg F
push cylinder down and most of the time the sleeve or sleeves will pop up
use an oven mitt or welding glove to pull the sleeves out. if they dont pull out then gently tap them out with a large tipped punch.
remove new sleeve from freezer and drop it in.
you will still need to have a machinist face the top of the cyl and bore it to your piston, but you saved yourself a few bucks.