I was doing my post-weekend cleaning last night and noticed my jet planer is leaking oil--looks like the gear box gasket is leaking. I've only had the planer a year, but it spent 5-6 years in a cabinet shop and received heavy use. I took a quick look at it and it looks like I'll have to take the feed roller and cutter sprockets off to split the gear box case. Has anyone ever done that? I'm hoping I can simply remove the sprockets and screws holding the two halves of the gear box together and split the case. Don't want to get into removing gears and such.