I have the Impact Driver all warmed up!Those are not phillips, they are "Japanese Industry Standard". Be very careful or they will strip too.
Now would be a good time to shop your local hardware store and change over to all Allen heads.
Great, thanks. That was the sort of info I was looking for. I tried a search but haven't got the hang of the key-words here. On the V-Bulletin sites this sort of info can be "tagged" and entered into the "tag" cloud-doesn't seem to be an option on the forum. +1 on the anti-sieze, dissimilar metals really like to become one. I already started with the PB Blaster.I recommend that you get a kit to replace the screws. You'll end up stripping the heads and you'll start cursing the bike. Like srs713 said, they are not phillips, rather JIS screws which strip easily when removed with a standard phillips screw driver.
I bought a kit from alloyboltz via ebay. It was under 30 bucks and everything fit great. Now when I have to remove my side cases, all I need is a 5mm allen head driver. It was worth the money to me big time.
Try this link.
I went to the hardware store before I bought my kit and priced out individual bolts for the engine cases. I couldn't find the longer bolts that hold on the starter motor. If I bought individual bolts, the cost was over 50 bucks.
The alloyboltz.com kit was under 30 bucks. You can order from them here.
There are other brands, so you can shop around. Make sure you use anti-sieze because of the stainless vs. aluminum.