So I recently rebuilt my clutch etc, I got my driveshaft on, but im having trouble getting it torqued down, I have 2 jack stands, 2 jacks. One jack is 20in of lift four ton. The other is 15in of lift or so and 2 ton. I need to get more room and jacking it up on the rear alone (using frame rails) doesn't help. Where else can I not only use as a jack point but a stand point. Do I need to use thread locker? Also I was doing some work under the car and I noticed a small (dryish) trail from right where the main rear seal is... the thing is I just replaced it with a new one and I don't want to tear down again is it possible its leaking??!