killed my oil pan, any way to fix this?

ive been out of town all weekend but I finally had some time to look at the oilpan late last night
(this was after I got it welded)

I rinsed it out real good and cleaned it to get her ready for paint...sure enough, still leaking

so I cleaned up the weld and brought it back in
had a different coworker weld it this time, only because the first guy wasn't there

filled it up with water again and now it holds :)

ill paint it today and should be back wrenching in no time

which leads me to the next question
I am using the single piece rubber gasket
can I run some permatex on there to keep it on place?
(I think I read rusties advice on using permatex to glue to gasket to the pan and let it cure overnight?)


the first time I installed it dry and it didn't leak but this time the engine will be in the car and I don't want the gasket to slip of the waterpump or rear main and leak