I added three shims that totaled just less then 1/16". It didn't change the feel much at all. I could easily add another 1/16" spacer. I might try that at some point.
seems like that should have made a decent difference. the article is talking .062 (1/16") I did less (.054 +/-) and got a huge change, but I am willing to go more. maybe double since you can just reverse the process. I guess the key would be to use the pressure gauge. either way you would be doing trial and error anyway and it's going to come down to personal preference.