Well, aside from the economy that is. EAA has come out with some great resources for homebuilders that were not available when I was building my RV-4. Not only are the kits easier to put together but the resources are wonderful. EAA is now hosting a website for homebuilders with informative videos. Everything from AN hardware basics to hose fabrication, nicopress fitting fabrication, propeller repair, tube and fabric tips, and wood and composite construction tips. Here is a detailed video on changing oil filters:

http://services.brightcove.com/services/viewer/federated_f8/1119669386

For more of these great videos click here: Hints for Homebuilders