I bought an RZ4623 Zero Turn Mower. I changed the oil today and got oil everywhere. This is a VERY poor design. How do you change the oil on this machine without getting it everywhere? Is there a video showing the oil change process? I bought this mower used (4.2 hrs) from Lowe's, and it did not come with the manual, quick disconnect for cleaning the deck, or anything to change the oil with. I've tried to look up the accessories on the Husqvarna site, but none of this shows. Any suggestions you have would be great.