I'm trying to install an engine guard on my '05 DL650. In order to install the engine guard I have to install a bracket. In order to install the bracket I have to remove two hex bolts that hold the sidestand onto the bike. But, the bolts won't budge. I've tried WD40 and banging on my wrench with a hammer. No luck. Any suggestions as to how I can remove these bolts without drilling them out are appreciated. Thanks.