I was wondering if anyone has replaced their outer primary cover with an older version that has the access hole to adjust the primary chain manually, and if so can a manual primary chain adjuster be installed without any modifications to the existing inner primary.( I don't remember what year they switched to a auto tensioner) My bike is an 2009. The reason for this question is that I have been wondering if the following is true: Lets say I drive across highway 50 in Nevada and it is 100 degrees out and I am doing 80MPH, which I have done, so my primary chain is going to expand a little and then the auto adjuster is suppose tighten up to make up for the expansion . So I guess the second part of my question is, when everything cools down does the auto tensioner readjust or does it just ratchet up and stay there causing you to end up with a primary chain that is too tight which could put stress on your primary components? Here is something else to ponder, has anyone modified their primary cover in any way by drilling a hole in the top section, tapping it, and installing a chrome bolt with an "O" ring so they could change their primary fluid without pulling the large round clutch cover which has the 5 small bolts around it? It might not look as nice, but it would sure make changing primary fluid a lot easier. ( I realize with the older style cover you could add fluid thru the primary chain adjustment access hole) Thanks in advance for your replies. CAHDBIKER