Re: Only main problem I had was the chassis cross-member that is directly beneath the drain plug that makes it difficult to get an oil catch pan successfully beneath the oil pan without it deflecting the discharging oil and spattering all over the concrete driveway before realizing that it is making an absolute MESS!! Sorry, I forgot I had said don't ask... LOL!
I found that by using my leveling jacks if I raise the coach slightly I can fit the oil catch container (flat type) between the axle & oil pan. Sees to work pretty good.