Going to do valve check this fall along with other maintenance I need done. I have Freds video’s and have no problem doing the work, but what do I do about shims? Do I measure first then order what I need if any? Is there a kit I can buy that doesn’t cost a arm and a leg? Would like to have everything in front of me when I do the job. Also any tips for making the job quicker or easier would be greatly appreciated. Thanks for any help. Bike has 47k on it.