Hello pwsaunders,
I have a 2010 G5 Deluxe UCE. I added an extra hose from the nipple on the bottom of the air cleaner housing and routed it over the lowest point of the drive chain. If there is an overflow, it's directed over the chain. I learned very early not to OVERFILL the crankcase. I keep my oil level half way between the low and high marks on the sight glass. Make sure that when you check your oil level, that the bike itself is on level ground. If it's tilted to the left, you can overfill it.