@brian_menard: I've been wanting to submit this too. Yes it is VERY ANNOYING. There should be a drop down box allowing you to select the page you want to go to instead of having to jump 2-3 pages at a time to get to a particular volume. And, then you have to start all over if you select a volume and then you click to go back and end up on page 1 and you want to be on page 35. Though sometimes if you click on the webpage link it may have page 1 and you want to go to page 35 you would click and change the 1 to 35 and bypass the nightmare of 2-3 pages at a time.
If a creator's contribution has the wrong box checked and you undo it, correct it with the right box and save it. The corrected box will appear after the save but the wrong box that was unchecked will still show under the creator's contribution.