I think the point of screwing the adjuster down was so you could count thd threads under the rocker, count the threads you want removed, calculate threads per inch, and it will tell you how much longer your pushrods have to be. Looks like at least a +.250.
Actually I think our one-eyed wizard LOL thought that I could use what I have. I could see that that wasn't going to happen but in order to not have him start calling me names I went ahead and got my hands dirty again...